Hello! I have the following problem - I turn on the computer, on the very first page where the BIOS is loaded, the following happens - it shows the BIOS version, then the memory is scanned, writes that the memory works in 2-channel mode, then it displays what is connected to the primary mastery, what to slave mastery (respectively HDD and DVD) - everything is as usual here, but after that the BIOS freezes for an indefinite time, usually for a couple of minutes, after that it just shows a black screen with a white blinking cursor in the upper left corner and that's it - it doesn't load any further. waited for 10 and 15 minutes - useless. At the same time, the buttons on the keyboard do not work - neither Del, F7, F9, F12 - nothing at all. (including on the first page when loading the BIOS)
I described the essence of the problem. Now about what it arose from. The cooler on the processor junked me. I bought a new one (only for 3 pins instead of the box's 4 pins). I started to play. Before that, he completely disconnected everything from his mother (except for the prots), removed his mother, smeared the percent and the cooler with paste, put the cooler on, put the mother on, connected everything to the mother. After that, the computer stopped loading, at first it did not even beep at all. Here my jamb was that at first I forgot to connect the 4-pin plug from the PSU to the motherboard, well, I slightly confused the procedure for connecting the F-panel (the power button and the HDD operation light worked, the other 2 wires were connected to the wrong place). After I figured out all the wires and connected everything correctly, this problem arose. The first time I solved it in the following way - I completely disconnected all the plugs (including the 24-pin one from the power supply unit, when I took off my mother, I did not disconnect it) and turned them on again. It all worked. After turning on the computer for the third time, the problem recurred. Then I solved the problem only in this way - I removed the percentage from the mother and inserted it again
After that, the problem repeated itself again for 2 or 3 times when the computer was turned on, again solved it by removing the stone from the motherboard.
Everything I tried, but only reconnecting the processor helped me:
-completely removed everything from the mother and reinserted it (including the plugs) - vidyuhu, memory, HDD, power supply unit, battery (including resetting the settings to the factory settings through the BIOS). By the way, I removed the battery even when I could not understand why the computer was not loaded at the very first time (when I forgot to connect the 4-pin wire from the power supply to the mother), all the F-panel plugs.
- did cleaning, purge the computer
- changed the paste more than once, by the way, the percentages are not heated, so it's not about the cooler and not the paste - the idle temperature is 39 degrees (before it was about 50)
I did all the procedures with the power off completely.
Once again, I repeat, the only thing that helps is to pull out the percent and insert it back. I did this procedure 3 times (and I did it only 3 times, nothing else) - it always helped. Perhaps, when I first pulled out the probe, I accidentally touched the contacts of the probe with my finger, but the problem appeared even before that (before it appeared, I did not pull out the percent at all). When the computer turns on, all the devices work fine, no problems were found, there are no brakes either, the percent does not heat up even under load.
Tell me what could be wrong? I apologize for writing so much, trying to describe the problem in as much detail as possible. By the way, here is the system config: mother Gigabyte GA-8I945P-G, percent Intel Pentium 4 630, 3015 MHz (15 x 201), memory gig (2 strips of 256 and 1 of 512, stupid of course, but it was like that initially), BIOS type -Award Modular (09/26/05) version F7, vidyuha - NVIDIA GeForce GTS 250 (512 MB), XP operating system. I don't have a tester, so I can't check the voltage.
Thanks in advance for the advice!
Supplement # 1
i also forgot to add about the power supply - FSP 450 watts 20 + 4 pin ATX 12V.
This article is about how to reset BIOS to factory settings. This becomes necessary if you yourself have changed something. This could lead to the following consequences: unstable operation of a computer (PC) / laptop, inability to turn on a PC / laptop, a black boot screen of the operating system, an unknown password to enter the BIOS setup, and many others.
Zeroing CMOS memory hardware
Let me remind you that the BIOS is built on CMOS technology (complementary logic on metal-oxide-semiconductor transistors).
Many users speak positively about this method. For many people, after a factory reset, the laptop monitor started working again and had no display problems. If this method did not help you, read on.
We identify the malfunction of the laptop matrix
If you are faced with a problem when a black screen appears after turning on the laptop and the image is not visible at all, then you can use a tricky method to determine the malfunction of the matrix and video card. The method consists in connecting an external monitor to the laptop. See which connectors are on your device and which are on the monitor.
Reset BIOS settings
If the problem "the laptop does not turn on and a black screen appears" appeared after changing the BIOS settings, then you just need to reset and roll back to the factory settings. This action takes several steps.
1. When turning on the laptop, press the f10 key for 10 seconds to enter the BIOS.
2. Then press f9 and enter to return to factory settings.
3. Press the f10 key and enter - this action saves the settings and reboots the laptop.
7. Insert the battery back.
In this case, you should contact the service center and consult with specialists.
Reset BIOS
Maybe the black screen problem appeared immediately after the user made some changes to the basic BIOS settings. In such a situation, it is necessary to reset these very settings and return to the factory settings, that is, the original ones.
To complete this task, you must adhere to the following instructions:
bIOS reset (pulling out the battery, and closing the contacts does not help ...)
And finally, the power supply, because of which the computer does not turn on at all, we connect the faulty power supply to the electrical outlet, then, as expected, we closed the green (PS-ON) and black (ground) wires on the contacts with a paper clip, then as we see nothing happens, the cooler on the block does not rotate, in this case it is useless to connect the load in the form of a floppy drive, the power supply is not working properly.
Also, once I came across a computer that did not turn on because of the melted wires of the additional power supply to the processor.
As you can see, friends, with the help of a multimeter, you can install a working power supply or not, but unfortunately the multimeter will not help you turn on the computer, so I advise if you come across a computer that does not turn on at all, then for 100% troubleshooting, keep a working unit ready power supply, it will greatly save you time and nerves.
Computer does not turn on due to faulty POWER button
Someone bad kicked it with a foot and does not tell you, and even so it happens friends, you check the power supply, change the CMOS battery, but the matter is completely different. If, when you press the POWER button, you feel that it is physically defective, for example, it fails, then you can directly try to turn on the computer bypassing it.
The memory in which the BIOS settings are stored, as well as the motherboard clock, are not non-volatile: there is a battery on the board. Removing this battery causes the CMOS memory (including the BIOS password) and the clock to be reset (although sometimes you need to wait a few minutes before this happens).
Note: there are sometimes cases where the battery is not removable, be careful not to use excessive force.
We do as described above. We return the jumper to its original position.
We launch our "patient" and - oh, miracle! Our ears hear a single short "beep" from the speaker (which indicates that the system has successfully passed the starting POST test), our eyes see a blissful picture of white initialization lines of all components running across the black screen, the system administrator's soul wants a holiday and a beer! :)
What lesson can you learn from this story? What should have been done first ( completely reset BIOS settings) was done at the last moment. Hence - a lot of wasted time at the firm, but - one good article on the site! :) Output? - any understanding and knowledge comes with experience (positive or negative is not so important anymore). So - experiment, gentlemen, experiment! :)
P.S. This computer works stably to this day, and more than half a year has passed. You can take the decoding of the sound signals of the BIOS here (in the kit - a specialized utility).
Hello. Today's article will to some extent be a continuation of the story that we started in the last one about HDD partitioning styles. It so happened that a computer with a rather interesting malfunction came for repair. When you turn on the computer displays a picture of the BIOS, and further and further silence - just a black screen. Having gained experience and knowledge from the last article, I decided to experiment a little and solve the problem not by ordinary reinstallation, but somehow tricky. The ultimate goal is to get a working, startup computer with all the data. How I did it, read on.
How to fix black screen after BIOS splash?
Well, the first thing I decided to start with was actually examine the computer for hardware faults. I started by scanning the RAM. The RAM was a single 4 GB DDR-3 strip. I scanned with an interesting program that was already automatically built into the BIOS, later as it turned out (due to UEFI). Unfortunately or fortunately, but the scan showed nothing terrible, everything is fine. Next came the turn to scan the hard drive. It took a little longer here. But here, too, the result turned out to be positive, there are no broken sectors. An interesting picture turns out, the main tested parts are still working, but the problem with the computer has not yet been solved, so we turn on our head and think about possible options. Then it occurred to me to try to reset the BIOS settings, but it happens, albeit not often, that he is the culprit, but as it turned out later, only not this time. Reset was carried out both through the BIOS itself
and using a special button on the motherboard.
The settings were all reset successfully, but they did not lead to anything. And at this stage, I decided to spit on everything and just install Windows 7 from the disk. I insert the original image, at first everything loads quickly, but suddenly, at the moment when I need to select partitions, the installer throws such a picture to me.
And then it dawned on me. It turns out that on this computer the HDD is placed using the GPT style for the MBR space, and perhaps all the problems stem from this. Minutes of reflection began .. the most mysterious thing for me was that Windows 7 was installed on this very computer. Then, of course, I remembered that Windows 7 x64 can see GPT, which means that it is installed here. Now the further way of solving the problem for me was as follows:
- Copy all the necessary data using the LiveCD to an external disk, then delete all partitions and make an envelope for the previous one;
- Check BIOS settings, UEFI support, devices in Boot Order;
And as you might have guessed I went along the second path. I went into the BIOS, checked all the settings, it really does support UEFI, then went into the boot devices section and this very boot-order was interestingly divided into two parts, on top of the device (but under the UEFI block), just below, almost the same devices ( but under the Legacy block).
In the search, I found the necessary information, and then an insight awaited me again 🙂 In the last article, I even touched on this a little. In general, in a nutshell, how these two blocks differ (UEFI vs Legacy). You can boot from your external device in the same way, either from the UEFI block or from the Legacy block, but only in the first case, your BIOS will use special algorithms that will allow you to see! GPT style HDD partitions. In the case of Legacy, you will see partitions only if your hard disk is marked using the old MBR technology. And that's exactly where the plug is. Because my attempts to enter the "System Restore" (installation disk) section for some reason always failed. Now, being aware of this, I again cling to the Windows 7 x64 installation image, load from it. Further to the item "System Restore"
This article is about how to reset BIOS to factory settings. This becomes necessary if you yourself have changed something. This could lead to the following consequences: unstable operation of a computer (PC) / laptop, inability to turn on a PC / laptop, a black boot screen of the operating system, an unknown password to enter the BIOS setup, and many others.
Zeroing CMOS memory hardware
Let me remind you that the BIOS is built on CMOS technology (complementary logic on metal-oxide-semiconductor transistors).
Many users speak positively about this method. For many people, after a factory reset, the laptop monitor started working again and had no display problems. If this method did not help you, read on.
We identify the malfunction of the laptop matrix
If you are faced with a problem when a black screen appears after turning on the laptop and the image is not visible at all, then you can use a tricky method to determine the malfunction of the matrix and video card. The method consists in connecting an external monitor to the laptop. See which connectors are on your device and which are on the monitor.
Reset BIOS settings
If the problem "the laptop does not turn on and a black screen appears" appeared after changing the BIOS settings, then you just need to reset and roll back to the factory settings. This action takes several steps.
1. When turning on the laptop, press the f10 key for 10 seconds to enter the BIOS.
2. Then press f9 and enter to return to factory settings.
3. Press the f10 key and enter - this action saves the settings and reboots the laptop.
7. Insert the battery back.
In this case, you should contact the service center and consult with specialists.
Reset BIOS
Maybe the black screen problem appeared immediately after the user made some changes to the basic BIOS settings. In such a situation, it is necessary to reset these very settings and return to the factory settings, that is, the original ones.
To complete this task, you must adhere to the following instructions:
bIOS reset (pulling out the battery, and closing the contacts does not help ...)
And finally, the power supply, because of which the computer does not turn on at all, we connect the faulty power supply to the electrical outlet, then, as expected, we closed the green (PS-ON) and black (ground) wires on the contacts with a paper clip, then as we see nothing happens, the cooler on the block does not rotate, in this case it is useless to connect the load in the form of a floppy drive, the power supply is not working properly.
Also, once I came across a computer that did not turn on because of the melted wires of the additional power supply to the processor.
As you can see, friends, with the help of a multimeter, you can install a working power supply or not, but unfortunately the multimeter will not help you turn on the computer, so I advise if you come across a computer that does not turn on at all, then for 100% troubleshooting, keep a working unit ready power supply, it will greatly save you time and nerves.
Computer does not turn on due to faulty POWER button
Someone bad kicked it with a foot and does not tell you, and even so it happens friends, you check the power supply, change the CMOS battery, but the matter is completely different. If, when you press the POWER button, you feel that it is physically defective, for example, it fails, then you can directly try to turn on the computer bypassing it.
The memory in which the BIOS settings are stored, as well as the motherboard clock, are not non-volatile: there is a battery on the board. Removing this battery causes the CMOS memory (including the BIOS password) and the clock to be reset (although sometimes you need to wait a few minutes before this happens).
Note: Sometimes there are motherboards on which the battery is not removable, be careful not to use excessive force.
We do as described above. We return the jumper to its original position.
We launch our "patient" and - oh, miracle! Our ears hear a single short "beep" from the speaker (which indicates that the system has successfully passed the starting POST test), our eyes see a blissful picture of white initialization lines of all components running across the black screen, the system administrator's soul wants a holiday and a beer! :)
What lesson can you learn from this story? What should have been done first ( completely reset BIOS settings) was done at the last moment. Hence - a lot of wasted time at the firm, but - one good article on the site! :) Output? - any understanding and knowledge comes with experience (positive or negative is not so important anymore). So - experiment, gentlemen, experiment! :)
P.S. This computer works stably to this day, and more than half a year has passed. You can take the decoding of the sound signals of the BIOS here (in the kit - a specialized utility).
Hello. Today's article will to some extent be a continuation of the story that we started in the last one about HDD partitioning styles. It so happened that a computer with a rather interesting malfunction came for repair. When you turn on the computer displays a picture of the BIOS, and further and further silence - just a black screen. Having gained experience and knowledge from the last article, I decided to experiment a little and solve the problem not by ordinary reinstallation, but somehow tricky. The ultimate goal is to get a working, startup computer with all the data. How I did it, read on.
How to fix black screen after BIOS splash?
Well, the first thing I decided to start with was actually examine the computer for hardware faults. I started by scanning the RAM. The RAM was a single 4 GB DDR-3 strip. I scanned with an interesting program that was already automatically built into the BIOS, later as it turned out (due to UEFI). Unfortunately or fortunately, but the scan showed nothing terrible, everything is fine. Next came the turn to scan the hard drive. It took a little longer here. But here, too, the result turned out to be positive, there are no broken sectors. An interesting picture turns out, the main checked parts are still working, but the problem with the computer has not yet been solved, so we turn on our head and think about possible options. Then it occurred to me to try to reset the BIOS settings, but it happens, albeit not often, that he is the culprit, but as it turned out later, only not this time. Reset was carried out both through the BIOS itself
and using a special button on the motherboard.
The settings were all reset successfully, but they did not lead to anything. And at this stage, I decided to spit on everything and just install Windows 7 from the disk. I insert the original image, at first everything loads quickly, but suddenly, at the moment when I need to select partitions, the installer throws such a picture to me.
And then it dawned on me. It turns out that on this computer the HDD is placed using the GPT style for the MBR space, and perhaps all the problems stem from this. Minutes of reflection began .. the most mysterious thing for me was that Windows 7 was installed on this very computer. Then, of course, I remembered that Windows 7 x64 can see GPT, which means that it is installed here. Now the further way of solving the problem for me was as follows:
- Copy all the necessary data using the LiveCD to an external disk, then delete all partitions and make an envelope for the previous one;
- Check BIOS settings, UEFI support, devices in Boot Order;
And as you might have guessed I went along the second path. I went into the BIOS, checked all the settings, it really does support UEFI, then went into the boot devices section and this very boot-order was interestingly divided into two parts, on top of the device (but under the UEFI block), just below, almost the same devices ( but under the Legacy block).
In the search, I found the necessary information, and then an insight awaited me again 🙂 In the last article, I even touched on this a little. In general, in a nutshell, how these two blocks differ (UEFI vs Legacy). You can boot from your external device in the same way, either from the UEFI block or from the Legacy block, but only in the first case, your BIOS will use special algorithms that will allow you to see! GPT style HDD partitions. In the case of Legacy, you will see partitions only if your hard disk is marked using the old MBR technology. And that's exactly where the plug is. Because my attempts to enter the "System Restore" (installation disk) section for some reason always failed. Now, being aware of this, I again cling to the Windows 7 x64 installation image, load from it. Further to the item "System Restore"
Hello! I have the following problem - I turn on the computer, on the very first page where the BIOS is loaded, the following happens - it shows the BIOS version, then the memory is scanned, writes that the memory works in 2-channel mode, then it displays what is connected to the primary mastery, what to slave mastery (respectively HDD and DVD) - everything is as usual here, but after that the BIOS freezes for an indefinite time, usually for a couple of minutes, after that it just shows a black screen with a white blinking cursor in the upper left corner and that's it - it doesn't load any further. waited for 10 and 15 minutes - useless. At the same time, the buttons on the keyboard do not work - neither Del, F7, F9, F12 - nothing at all. (including on the first page when loading the BIOS)
I described the essence of the problem. Now about what it arose from. The cooler on the processor junked me. I bought a new one (only for 3 pins instead of the box's 4 pins). I started to play. Before that, he completely disconnected everything from his mother (except for the prots), removed his mother, smeared the percent and the cooler with paste, put the cooler on, put the mother on, connected everything to the mother. After that, the computer stopped loading, at first it did not even beep at all. Here my jamb was that at first I forgot to connect the 4-pin plug from the PSU to the motherboard, well, I slightly confused the procedure for connecting the F-panel (the power button and the HDD operation light worked, the other 2 wires were connected to the wrong place). After I figured out all the wires and connected everything correctly, this problem arose. The first time I solved it in the following way - I completely disconnected all the plugs (including the 24-pin one from the power supply unit, when I took off my mother, I did not disconnect it) and turned them on again. It all worked. After turning on the computer for the third time, the problem recurred. Then I solved the problem only in this way - I removed the percentage from the mother and inserted it again
After that, the problem repeated itself again for 2 or 3 times when the computer was turned on, again solved it by removing the stone from the motherboard.
Everything I tried, but only reconnecting the processor helped me:
-completely removed everything from the mother and reinserted it (including the plugs) - vidyuhu, memory, HDD, power supply unit, battery (including resetting the settings to the factory settings through the BIOS). By the way, I removed the battery even when I could not understand why the computer was not loaded at the very first time (when I forgot to connect the 4-pin wire from the power supply to the mother), all the F-panel plugs.
- did cleaning, purge the computer
- changed the paste more than once, by the way, the percentages are not heated, so it's not about the cooler and not the paste - the idle temperature is 39 degrees (before it was about 50)
I did all the procedures with the power off completely.
Nota Bene! Before creating a topic on the forum, I advise you to definitely read the article dedicated. In it, in an accessible language, an educational program for self-diagnosis and troubleshooting of PC problems is set out. Black screen when turning on laptop.
This is the most common problem with laptop hardware, or to be more precise with hardware settings. Below we will take a look at how to perform a hardware reset. This method helps when the hardware settings have failed, but it will not help if your laptop was flooded with water. In the article "Laptop does not turn on, causes and solutions", we considered physical problems associated with the appearance of a black screen.
All actions you perform at your own peril and risk, if you are not sure of something, it is better to contact the service center. Usually, the cost of repairing a laptop is significantly different from the cost of repairing computers.How to reset hardware settings
To perform a hard reset, follow these steps.
1. Disconnect the laptop from the mains or other power source. This includes disconnecting the laptop from the charger and removing the battery.
2. You must press and hold the power button for about 20 seconds
P.S Why do you need it? Everything is very simple. The laptop stores the residual charge of the capacitors to save the settings. When you turn on the laptop without a power source, this charge disappears and all settings are lost.
3. Then insert the battery and connect the laptop to power.
4. Turn on the laptop and select, using the arrows on the keyboard, normal boot Windows.
If these actions did not give any result, go to the next item.
Checking the health of the laptop screen
Checking if the laptop screen is working can help solve the problem with "Laptop won't turn on and black screen appears." This method is recommended to use if, when you press the power button, the laptop shows signs of life, i.e. indicators of power, railway operation, etc. I start blinking, the cooler starts to make noise. In this case, it is recommended to connect an external monitor and restart the laptop. If the laptop turns on and the OS boots, then there are problems with the screen and you cannot do without a service center.
Reset BIOS settings
If the problem "the laptop does not turn on and a black screen appears" appeared after changing the BIOS settings, then you just need to reset and roll back to the factory settings. This action takes several steps.
1. When you turn on the laptop, wait for the f10 key for 10 seconds to get into the BIOS.
2. Then press f9 and enter to return to factory settings.
3. Press the f10 key and enter - this action saves the settings and reboots the laptop.
If these steps did not help, see the next step.
Reinstalling the RAM module
The image may also not be displayed due to improper installation of the memory module or problems with contacts (very often this method helps to get rid of the problem "the laptop does not turn on and a black screen appears" after water or moisture gets on it, but before that, make sure that your laptop completely dry and in no case do not perform any action if it is not dry). To do this, you need to remove the RAM module, blow out the connectors (if you have one RAM strip installed, and there are 2 slots available for it, just swap them). Now let's figure out how to extract the RAM.
1. When disassembling a laptop, the very first step is to disconnect it from the power supply, and also remove the battery, and then just proceed to the disassembly itself.
Little advice before you start taking apart your laptop. The bolts are of different heights, so group them and put them in different boxes.
2. Many laptops have a dedicated compartment for RAM, it must be unscrewed. If you are unlucky and your laptop does not have such a bay, you will need to completely unscrew the back cover of the laptop.
The figure shows what the compartment for RAM looks like and how it needs to be unscrewed.
The RAM is held with the help of 2 clips on the right and left sides, therefore, from the beginning it is necessary to bend these clips, and only then remove the RAM. The figure by number 1 shows where it is necessary to bend the latches.
4. Reassemble the laptop, insert the battery and plug it in. Turn on your laptop.
If these steps do not give any result, you need to reinstall the BIOS. To do this, go to the manufacturer's website, find and download the latest BIOS version. The archive will have a readme file with detailed instructions for installation. BIOS reinstallation must be performed in the very last case, but in general it is better to contact the service center, because the problem may not be in the BIOS at all, but, for example, in the north or south bridges, a video card, etc.
