Hi all. Today’s article will be to some extent a continuation of the story that we started in the last one about HDD markup styles. It so happened that a computer came in for repair with a rather interesting malfunction. When you turn on the computer, it displays the BIOS picture, and then there is 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 with a regular reinstallation, but in some tricky way. The ultimate goal is to get a working, starting computer with all the data. Read on to find out how I did this.
How to fix black screen after BIOS splash screen?
Well, the first thing I decided to start with was to actually examine the computer for hardware faults. I started with scanning random access memory. The RAM consisted of one single 4 GB DDR-3 stick. I scanned with an interesting program that was already automatically built into the BIOS, which later turned out (due to UEFI). Unfortunately or fortunately, the scan didn’t show anything bad; everything was fine. Next it was time to scan hard drive. This took a little more time. But here the result was positive, bad sectors There is not. The resulting picture is interesting, the main tested parts are still working, but the problem with the computer’s operation has not yet been solved, so we turn on our heads and think possible options. Then it occurred to me to try resetting the BIOS settings, but it happens, albeit not often, that it is the culprit, but as it later turned out, not this time. The reset was carried out both through the BIOS itself
and using a special button on the motherboard.
All settings were reset successfully, but to no avail. And at this stage I decided to give up 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 me such a picture.
And then it dawned on me. Turns out on this computer HDD placed using the GPT style in place of the MBR and perhaps all the problems come from this. Minutes of thought began... the most mysterious thing for me was that Windows 7 was somehow installed on this very computer. Then, of course, I remembered that Windows 7 x64 can see GPT, which means it is installed here. Now the further path to solving the problem for me looked like this:
- Using LiveCD, copy all the necessary data to external drive, then delete all sections and make an envelope according to the previous one;
- Check settings in BIOS, availability of UEFI support, devices in Boot Order;
And as you might have guessed, I took the second path. I went into the BIOS, checked all the settings, it really works UEFI support, then I went to the boot devices section and this same 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).
I found in a search necessary information, and then inspiration awaited me again :) In the last article I even touched on this a little. In general, briefly, what is the difference between these two blocks (UEFI vs Legacy). You can boot from your external device It’s the same whether from a UEFI block or from a Legacy block, only in the first case your BIOS will use special algorithms that will allow you to see! HDD partitions in GPT style. In the case of Legacy, you will see partitions only if your hard drive is partitioned using the old MBR technology. And this is exactly the gag. Because my attempts to go to the “System Restore” section ( installation disk) for some reason always ended in failure. Now, being an expert in this, I again cling to the installation Windows image 7 x64, I boot from it. Continue to “System Restore”
This article is about how to reset the BIOS to factory settings. This becomes necessary if you have changed something yourself. This could lead to the following consequences: unstable work computer (PC)/laptop, inability to turn on the PC/laptop, black screen loading the operating system, unknown password to enter the BIOS setup and many others.
Resetting CMOS memory using hardware
Let me remind you that the BIOS is built on CMOS technology (complementary logic on metal-oxide-semiconductor transistors).
Many users respond positively to this method. For many people, after resetting the settings, the laptop monitor started working again, and there were no problems with the image. If this method did not help you, read on.
Detecting a laptop matrix malfunction
If you are faced with a problem when, after turning on the laptop, a black screen appears and the image is not visible at all, then you can use a tricky method to determine whether the matrix and video card are faulty. The method is to connect an external monitor to the laptop. Look at which connectors are on your device and which are on the monitor.
Resetting 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 factory settings. This action is performed in several steps.
1. When you turn on the laptop, press the f10 key for 10 seconds to enter the BIOS.
2. Then you need to 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. Reinsert the battery.
In this case, you should contact the service center and consult with specialists.
Reset BIOS
Perhaps 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 same settings and return to the factory settings, that is, the original ones.
To execute this task The following instructions must be followed:
resetting the BIOS (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 an 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 unit does not rotate, in this case it is useless to connect a load in the form of a disk drive, the power supply is faulty.
Also, once I came across a computer that did not turn on due to melted wires for the additional processor power supply.
As you can see, friends, using a multimeter you can determine whether the power supply is working or not, but unfortunately the multimeter will not help you turn on the computer, so I advise that if you come across a computer that does not turn on at all, then to 100% identify the fault, keep a working unit ready nutrition, this will save you a lot of time and nerves.
The computer does not turn on due to a faulty POWER button
Someone bad kicked it and doesn’t tell you, and this happens, friends, you check the power supply, change CMOS battery, but the matter is completely different. If when you click on POWER button, you feel that it is physically faulty, for example, it is failing, 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 resets the CMOS memory (including the BIOS password) and the clock (although sometimes you have to wait a few minutes before this happens).
Note: Sometimes there are motherboards on which the battery is not removable, be careful and do not use unnecessary force.
We do as described above. 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 initial POST test), our eyes see the blissful picture of white lines of initialization of all components running across the black screen, the system administrator’s soul wants a holiday and beer! :)
What lesson can you learn from this story? What should have been done first ( completely reset bios settings) was done at the last minute. Hence - a lot of wasted time at the company, but - one good article on the site! :) Conclusion? - any understanding and knowledge comes with experience (positive or negative is no longer so important). So - experiment, gentlemen, experiment! :)
P.S. This computer works stably to this day, and more than six months have passed. You can find a transcript of the BIOS sound signals here (a specialized utility is included in the kit).
Hi all. Today’s article will be to some extent a continuation of the story that we started in the last one about HDD markup styles. It so happened that a computer came in for repair with a rather interesting malfunction. When you turn on the computer displays the BIOS picture, and then there is 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 with a regular reinstallation, but in some tricky way. The ultimate goal is to get a working, starting computer with all the data. Read on to find out how I did this.
How to fix black screen after BIOS splash screen?
Well, the first thing I decided to start with was to actually examine the computer for hardware faults. I started by scanning the RAM. The RAM consisted of one single 4 GB DDR-3 stick. I scanned with an interesting program that was already automatically built into the BIOS, which later turned out (due to UEFI). Unfortunately or fortunately, the scan didn’t show anything bad; everything was fine. Next it was the turn to scan the hard drive. This took a little more time. But here too the result was positive, there were no bad sectors. The resulting picture is interesting, the main tested parts are still working, but the problem with the computer’s operation has not yet been resolved, so we turn on our heads and think about possible options. Then it occurred to me to try resetting the BIOS settings, but it happens, albeit not often, that it is the culprit, but as it later turned out, not this time. The reset was carried out both through the BIOS itself
and using a special button on the motherboard.
All settings were reset successfully, but to no avail. And at this stage I decided to give up 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 me such a picture.
And then it dawned on me. It turns out that the HDD on this computer is placed using the GPT style in place of the MBR, and perhaps all the problems come from this. Minutes of thought began... the most mysterious thing for me was that Windows 7 was somehow installed on this very computer. Then, of course, I remembered that Windows 7 x64 can see GPT, which means it is installed here. Now the further path to solving the problem for me looked like this:
- Using LiveCD, copy all the necessary data to an external drive, then delete all partitions and make an envelope using the previous one;
- Check settings in BIOS, availability of UEFI support, devices in Boot Order;
And as you might have guessed, I took the second path. I went into the BIOS, checked all the settings, indeed it supports UEFI, then I went to the boot devices section and this same 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 inspiration awaited me again :) In the last article, I even touched on this a little. In general, briefly, what is the difference between these two blocks (UEFI vs Legacy). You can boot from your external device the same way, either from a UEFI block or from a Legacy block, but in the first case, your BIOS will use special algorithms that will allow you to see! HDD partitions in GPT style. In the case of Legacy, you will see partitions only if your hard drive is partitioned using the old MBR technology. And this is exactly the gag. Because for some reason my attempts to go to the “System Restore” section (installation disk) always failed. Now, being a good judge of this, I again grab the Windows 7 x64 installation image and boot from it. Continue to “System Restore”
Hello! I have the following problem - I turn on the computer, on the first page where the BIOS is loaded, the following happens - it shows the BIOS version, then the memory is scanned, it says that the memory is working in 2-channel mode, then it displays what is connected to the primary mastery, what to slave mastery (HDD and DVD, respectively) - everything is as usual here, but after that the BIOS freezes on 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 won’t load any further. I waited for 10 and 15 minutes - it was useless. At the same time, the buttons on the keyboard do not work - not 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 why it arose. The cooler on my processor was malfunctioning. I bought a new one (only 3 pin instead of the box 4 pin). I started putting it on. Before this, I completely disconnected everything from the mother (except for the processor), removed the mother, greased the processor and cooler with paste, installed the cooler, installed the mother, connected everything to the mother. After that the computer stopped booting, at first it didn’t even beep at all. My problem here was that at first I forgot to connect the 4-pin plug from the power supply to the motherboard, and I slightly confused the order of connecting the F-panel (the power button and the light bulb worked HDD operation, the remaining 2 wires were connected in 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, when I removed the mother I did not disconnect it) and turned them on again. Everything worked. After turning on the computer for the third time, the problem repeated itself. Then the only way to solve the problem was to remove the percentage from the mother and reinsert it
After that, the problem recurred again the 2nd or 3rd time I turned on the computer, I solved it again by removing the stone from the motherboard.
Everything I tried, but only reconnecting the processor helped me:
- completely removed everything from the mother and re-inserted it (including plugs) - video card, memory, HDD, power supply, battery (including resetting the settings to factory settings via the BIOS). By the way, I removed the battery when I couldn’t understand why the computer didn’t boot the first time (when I forgot to connect the 4-pin wire from the power supply to the mother), all the F-panel plugs.
- cleaned and purged the computer
- I changed the paste more than once, by the way, the percent does not heat up, so it’s not a matter of the cooler or the paste - the idle temperature is 39 degrees (it used to be about 50)
I did all the procedures with the power completely off.
Question: After changing the settings BIOS laptop stopped turning on
In BIOS boot tab I swapped the equipment (I didn’t turn anything off), and pressed save and reboot, the computer beeped 2 times and everything turned off, after that it doesn’t respond to anything. Help me what should I do
Answer: The following helped me restore the laptop: removed the screw, turned on the laptop,
F2 went into BIOS, f9 enter, f10 enter. I turned off the laptop, inserted the screw, turned on the laptop and everything worked!!!
Question: Toshiba satellite l850, black screen after changes in BIOS
After changes in the BIOS (I don’t remember exactly what I changed), I pressed reboot and now at startup there is a black screen (The screen has stopped showing signs of life) At the same time, Windows is loading (I understood this by the sound). I tried resetting the BIOS by removing the battery - the result was zero. I took out the RAM, swapped it, etc., that didn’t help either. I tried to connect it to the TV via HDMI and the image was not output. I saw in the video a method of closing the cooler hole (the laptop seemed to warm up and start), but also without result.
Answer: This means it really works, but why it doesn’t display a picture, we need to figure it out external monitor Indeed, it can only be switched from under a loaded system through the video driver settings. Since it was after changing the BIOS settings that this problem appeared, then of course it could be a glitch, since removing the BIOS battery and turning off the power to the laptop for a while did not help, then it makes sense to do it again, just wait longer, if it doesn’t help, then flash it with another one, the old one pre-save. Moreover, I do not rule out problems with the matrix itself, the cable and video output, but for starters it’s easier to flash it by saving the old dump; if that doesn’t help, then you can return the old dump and look for problems in the matrix, cable, video output.
It doesn’t hurt to announce the motherboard model and the full laptop model.
Question: Samsung NP355V5C (QMLE4 LA-8863P REV 2.0) Does not start after changes in BIOS
You need to reinstall Windows on samsung laptop, for this, according to the instructions, it was necessary to go into bios and change fast bios mode to "disabled" and secure mode also to "disabled". After saving the settings and rebooting, the computer turns on, but the screen is black, does not respond to anything, the cooler turns to maximum, the boot does not even reach the BIOS, just a black screen.
I tried resetting the BIOS by closing the contacts - no response. I was surfing the forum, people with the same laptop and a similar problem had their video chip die, but somehow it’s strange, I didn’t change anything except the settings, and after a reboot nothing works.
Answer: BIOS firmware on the programmer will solve the problem!
Question: After installing the drivers, the laptop does not turn on
Good afternoon, gentlemen, as you can see from the title, the laptop stopped turning on after reinstalling the drivers for the video card. I installed it from the official website and downloaded it latest version for your video card (Zhifors 750m). After pressing the power button, a splash screen appears, and behind it a black screen (not dim, turned off, but black on). So what can you do in such a situation?
Answer: There were no artifacts or freezes, there was just a drop in FPS that was not particularly pleasant.
Added after 1 hour 15 minutes
Upd.
Managed to start Dell backup and recovery and try to find and solve errors through it. The program stood running for about an hour, there were no changes in the status bar. Then I turned off the laptop and turned it on again. Fully launched but in a temporary profile. Comrades, how to return to the human state?
Added after 59 minutes
Upd.
We managed to remove the temporary profile, but for some reason all the data from the original profile was transferred to some left one, only the avatar remained from the old one, on the new one all the wallpaper settings, desktop, etc., etc. We are trying to return everything back to the old one, advice/instructions are extremely welcome.
Question: I bought RAM for a laptop and the laptop stopped turning on
help, I bought RAM for my laptop Pocketbel, it was 2GB 1Rx16 PC3L -12800S-11-13-C3 HMT425S6AFR6A -PB NO AA1442
Bought
AMD R534G1601S1S-U
DDR3 1600 MHz (11-11-11-28)4GB SODIMM1.5V
I installed it and the laptop stopped turning on and won’t turn on
could you explain why? thanks in advance
Answer:
Message from radikgrabov
1.35V bar
Yes. DDR3L. The sticker may also say "PC3L".
Question: The laptop stopped turning on
Hello! I have a laptop Acer Aspire V3-571G. The problem is this. My laptop turned off while I was working. The indicator that the battery is charging is lit. When you try to turn it on again, the multi-phase indicator goes out, and the indicator next to it (the light bulb) lights up and also goes out. The laptop won't turn on. After a second, the battery charge indicator lights up again.
P.s. The laptop battery has not been working for a month now, but everything worked without it. Give me some advice, maybe I need to solder the socket. I want to fix it myself. Thank you.
Answer: power cable as an option try changing it
Question: Backup copy BIOS settings
How can I copy BIOS settings to a file or device so that they can be restored later? Motherboard MSI b350 PC MATE, but I’m also interested in whether any motherboards can do this at all.
Answer: Does this menu save/load only overclocking settings or all settings?
Question: After entering the BIOS multiple times, the computer stopped turning on
Good afternoon, dear specialists. The problem is this: there is an Acer Aspire z3-605 monoblock. I decided to install Windows 8.1 on it, but before booting from the flash drive, I had to try different settings in the BIOS 20 times, because... Everything is too complicated, or I’m not at that level yet.
So, after repeatedly entering the BIOS, changing the settings and then saving, the monoblock stopped starting at all, namely: the fan starts, the power button is on, but the screen is black and the speaker does not make a beep, as it did before. I tried everything: I juggled the RAM, reset the BIOS by removing the battery for a few minutes, turned it off HDD, shorted the contacts of the battery socket. I tried to insert a flash drive to flash the BIOS, but the light on it did not light up, which indicates that there was no voltage on the USB ports. I need your help, what could have happened, maybe the firmware has crashed or the BIOS chip has completely burned out?
Of the last actions, except Windows installations, updating the BIOS version (there was version 5xk).
We have:
When turned off, the laptop then does not boot, goes into a cyclic reboot, after the bios screensaver turns off, then starts up.
You can go into bios. On the sysinfo tab sata port: not installed. The Sata HDD load is null. Those. bios doesn't see it?
When you log in via a bootable Acronis USB-DVD disk, you can see the disk and partitions! Like this? When you turn off Acronis, Windows starts normally and continues to work normally. The disk is there in Disk Management. The laptop goes to sleep and wakes up normally. It reboots normally. On another computer, although I didn’t look into the bios, this HDD works fine as a second disk. Rearranged the cables.
If you turn it off, it won’t boot into reboot either.
Please diagnose and help correct the problem.
A user who is faced with a problem with his PC and decides to figure it out on his own often looks for answers on the free forum computer help. But, unfortunately, on such resources it is necessary to go through a tedious (and, in fact, unnecessary) registration procedure, e-mail confirmation, etc. Why all this tinsel? After all, a person was brought to the forum by a problem requiring an immediate solution, but he doesn’t even care about reading the rules and registrations! Guided by similar reasoning, I created a forum for free computer help without registration. To post your question, just go to the form (at the bottom of this page), fill out the “Subject” field and ask the question itself. Visitors to the computer help forum (or the administrator himself) will certainly answer you.Nota Bene! Before creating a topic on the forum, I advise you to definitely read the article dedicated to it. It outlines in accessible language an educational program for self-diagnosis and troubleshooting of PC problems. When I turn on the laptop there is a black screen.
This is the most common problem associated with laptop hardware, or, to be more precise, with hardware settings. Below we will look at how to reset hardware settings. This method It helps when the hardware settings are lost, but it will not help if your laptop was flooded with water. In the article “The laptop does not turn on, reasons and solutions,” we looked at the physical problems associated with the appearance of a black screen.
You perform all actions at your own peril and risk; if you are not sure about something, it is better to contact service center. Typically, the cost of repairing a laptop differs significantly from the cost of repairing computers.How to reset your hardware
To perform a hard reset, you must follow these steps:
1. Disconnect the laptop from the network or other power source. This includes disconnecting the laptop from charger, as well as removing the battery.
2. You need to press and hold the power button for about 20 seconds
P.S Why is this needed? Everything is very simple. The laptop stores residual charge on capacitors to save settings. When you turn on the laptop without a power source, this charge disappears and all settings are lost.
3. After that, insert the battery and connect the laptop to power.
4. Turn on the laptop and select the normal Windows boot using the arrow keys on the keyboard.
If these steps did not give any result, proceed to the next step.
Checking the health of the laptop screen
Checking the functionality of the laptop screen can help solve the problem with “Laptop won’t turn on and black screen appears.” This method is recommended to be used 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 making noise. In this case, it is recommended to connect an external monitor and restart the laptop. If the laptop turns on and the OS loads, then there is a problem with the screen and you cannot do without a service center.
Resetting 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 factory settings. This action is performed in several steps.
1. When you turn on the laptop, wait for the f10 key for 10 seconds to enter the BIOS.
2. Then you need to 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 don't help, see the next step.
Reinstalling the RAM module
The image may also not be displayed due to incorrect installation 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 is completely dry and under no circumstances do any what to do if it is not dry). To do this, you need to remove the RAM module, blow out the connectors (if you have one RAM stick installed, and there are 2 connectors available for it, just swap them). Now let’s figure out how to remove 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 with the disassembly itself.
A little advice before you start disassembling your laptop. The bolts have different heights, so group them and put them in different boxes.
2. Many laptops have a special compartment for RAM; you need to unscrew it. If you are unlucky and your laptop does not have such a compartment, you need to completely unscrew back cover laptop.
The picture shows what the RAM compartment looks like and how it needs to be unscrewed.
The RAM is held in place with the help of 2 latches on the right and left sides; therefore, first you need to bend these latches, and only then remove the RAM. In the figure, number 1 shows where you need to bend the clamps.
4. Reassemble the laptop, insert the battery and connect to the network. Turn on your laptop.
If these steps do not produce any results, you will need to reinstall the BIOS. To do this, you need to go to the manufacturer’s website, find and download the latest BIOS version. The archive will have a readme file in it detailed instructions by installation. Reinstalling the BIOS should be done as a last resort, but in general it is better to contact a service center, since the problem may not be in the BIOS at all, but, for example, in the northern or south bridges, video card, etc.
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