After the black cloud reinstalls the system, it can t turn on the machine 20

Boot file corruption can only be done by reinstalling the system via a USB flash drive or disk.

If you don't have a USB flash drive or another computer, please go to a computer store to repair it.

1. Check whether the interface and power cord of the chassis power supply are in good condition, and replace them in time if the interface and power cord are damaged or broken. Check the motherboard power cord socket to see if the power cord is not in good contact. Change the power supply with high power.

2. Check whether the memory is inserted securely, check whether the monitor cable is firmly and reliably inserted into the host interface, and then check whether the contact between the graphics card and the IO slot of the motherboard is good. If necessary, remove the graphics card and reinsert it again.

3. Confirm whether the monitor is damaged, and try it with a new monitor to confirm normality.

4. Check if there is a problem with the CPU fan and replace the fan.

5. Lower graphics card acceleration - Desktop properties - Settings - Advanced - Troubleshooting - Lower "Hardware Acceleration" to "None" or Moderate - OK.

6. Update the graphics card driver or change the graphics card.

7. Set the BIOS to factory default.

8. Boot and try again, if the fault is still there, remove all components except CPU, graphics card, and memory sticks, and then power on and start the computer, if it is not the memory reason, change to a normal CPU, boot and re-test, if the black screen still appears, the motherboard is broken.

There are really all kinds of problems with today's computers.

If you can't pass the self-test, and the BIOS discharge doesn't work, it's a problem with the motherboard.

I have encountered such a problem, many times, it is generally caused by BIOS settings, discharge does not work, it is the focus on looking for the graphics card, and most of the failures that cannot enter the CMOS are caused by real hardware failures.

1: Caused by poor contact between the board and connector. The solution is to disconnect the power supply and re-insert the various boards and sockets in the chassis to ensure good contact.

2: It may be caused by the damage of a certain component, try to replace them one by one with the replacement method, and use the elimination method: unplug the independent graphics card first, leaving only the other hardware outside the few key components required to open normally. Then discharge the battery and turn it on, if you can't find the problem after all the above are done, then there are two possibilities: 1: your personal problem 2: it is impossible not to find the problem.

Memory incompatibility, or memory slot issues.

If you have a problem with your hardware, give the motherboard a discharge and try it.

After powering on, press F8 and then enter VGA mode.

Why are you so sure it's not a hardware issue?? I think your hard drive is very suspicious!! Have you tried to take the hard disk that has been installed on the system to someone else's computer to see if it can enter the system normally?

If there is no problem with the hard disk, even if the machine configuration is different, you can enter the system!!

You look for the motherboard manual to see, or look at the host, there is a clr-coms, the jumper is fine, change the keyboard, I have encountered it, the keyboard is broken.

"After pressing the boot button, the graphics card model and memory are displayed first, and then the screen is black, and you can't enter DOS, it's useless to press del, you can't enter the safe mode, and you can't read it if you put the system optical drive"If the self-test has not passed, it cannot be a system problem, it should be a BIOS or hardware problem.

I discharged the BIOS last night and then it was ready to boot" There are two situations, one is that there is a problem in the BIOS and the other is that the CPU or graphics card or memory temperature is too high.

The screen is black when it is turned on, and it can't pass the self-test, and the BIOS discharge has no effect, and the whole system is really paralyzed! It means that it is not a BIOS problem, because the first discharge is carried out a few hours after the failure, and the second discharge is carried out after the failure, so to eliminate the BIOS problem, it is a hardware problem, if the computer is powered off and turned off for a period of time after the failure can be started and entered, it means that the temperature of a key device (CPU graphics card memory or motherboard) is too high, it is recommended: open the chassis immediately after the failure to check the temperature of the key equipment.

Based on your description, I feel that there should be a hardware contact problem, which I have encountered before.

It is recommended to open the chassis and plug and install the memory, graphics card, fan, CPU, etc. after power failure.

By the way, clean up the dust once. When reinstalling, it is recommended not to use the ghost version first.

Don't be so sure, there must be something wrong with the hardware, no, go to the computer city and you will know.

There is a problem with the hardware, or the hard disk is unplugged, see if it can enter the BIOS

There will be no problems with the software either.

You remove the battery, put it back on after too long, and try resetting the BIOS.

If you can't change someone else's power supply, I've seen similar power supplies break down.

If you can't change the motherboard CPU power supply, let's change it.

The memory, master, or cable is not plugged in.

Insert the system reload disk, boot the computer and press F8, select *** CD driver.

You open the case, pull out the motherboard's BIOS battery, leave it for ten seconds and then put it back on, and then turn it on to see if it can, if it still can't, it's hard to say that your hardware must be fine. If there is any difficulty, you can know that it will be in the next voice.

Is there a bad bad way in the hard drive?

You can press F1, F2, F8, F11, F12 to boot Some BIOS are not DEL.

If you can go to the BIOS modification, start with an optical drive instead, and put in a boot disc that can be read.

Note that most optical drives have obvious aging after 1 year of use, so don't think that the hardware is completely fine.

Go to the BIOS and check if the hard drive can detect it normally.

You can go to the advanced PE internal repair under the guide to see,If it still doesn't work,U disk reinstall win7 system:

1. Open Xiaobai, then insert the USB flash drive and select Make USB flash drive.

2. Select the system you want to install, and then click "Install this system" to enter the next step.

3. Wait for the U disk boot disk to be made, no operation is required.

4. After making the boot disk, you can first look at the boot shortcut key of the computer motherboard, and then exit the USB flash drive.

5. Insert the U disk boot disk into the computer that needs to be reinstalled, and after the computer is restarted, keep pressing the boot boot shortcut key to enter the startup item, and select the USB flash drive to start into the PE system. Open Xiaobai to start installing the system, and wait for the installation to complete and restart automatically.

6. After multiple reboots, the computer can be used normally when it enters the new system desktop.

It must be a problem with the format of your hard disk, you enter the blos of the computer and change the SATA format to IDE compatibility mode, look at the method of entering the blos, different brands of computers are different, generally F2, delete esc F8 You try to enter the blos more, you will definitely be able to enter, but you didn't find the key, after the hard disk format is changed, you can enter the system after restarting!

Enter the safe mode or win pe, enter the desktop, and then format the c disk, which is the system disk, and then sit down and try the system I used to do this before.

Dear users, the causes of the black screen of the computer and the solutions:

Black screen caused by software.

1. Sometimes after installing some software or hardware drivers, you find that after restarting, the computer can't enter the system, and the screen has been black, which is the black screen of the notebook caused by the software. If the screen is blacked out due to software, take Windows as an example, you can restart the machine and press the F8 key a few more times when turning on the computer to bring up the system's boot options menu.

2. After the system boot options menu comes out, select Enter Safe Mode. If you can enter the safe mode normally, you can delete the software or driver installed before the black screen in the safe mode. Then restart the machine and see if the laptop can fix the black screen issue.

Hardware-induced laptop black screen.

1. On the laptop, there is a sensor switch, when the screen is closed, the display screen will automatically turn off, so as to save power consumption. Some notebooks are mechanically touched, such as when the screen is closed, it will touch it, like a beginning to disconnect the power of the display.

2. There are many reasons for the black screen caused by hardware. Let's talk about the cause of static electricity first, sometimes static electricity will cause the circuit of the notebook motherboard to be abnormal, resulting in no reaction on the screen after the power is turned on. You can try to turn off the battery and power of the laptop, and then press the power of the laptop a few more times to let the machine release the static electricity.

Then connect the power supply, turn it on, and see if it can solve the fault.

3. The memory is loose or the memory has a hardware failure.

4. The LCD screen part of the notebook is faulty. There are some notebooks that are a little older, and this may be the case.

5. The hardware failure of the graphics card, the graphics card is responsible for the source of all the display output of the computer, so it has a problem, and there is no display on the screen. If the graphics card is broken, you can't solve it yourself, and you can only find the computer's after-sales solution.

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After the computer reinstalls the system with one click, the computer cannot start, which should be a problem with the system reinstallation, which can be solved by following the following methods:

1. First of all, once you encounter such a situation, press F8 when you boot up, and select the last correct configuration to start the operating system. Try it, whether to enter safe mode, set it up and start it again;

2. If the computer has an optical drive and a system CD, you can reinstall the system again, which is a more thorough method, and it will become a new system after installation.