May I ask what causes the black screen of the computer to cause the computer not to turn on the comp

Your computer problem does not belong to the scope of the computer black screen, this is just not able to enter the system, but this is a system problem or a hard disk problem can not be seen on the surface, the best way is to reinstall the system to know, if you can enter the system after reinstallation, it is not a hard disk is broken.

This is also a way to save energy, just hit enter, and some don't need to force a restart.

1. It may be that the laptop graphics card driver is faulty, and you need to use the boot repair tool to enter the repair system of the notebook, and then reinstall the graphics card driver.

2. It may be a laptop graphics card failure, which is generally manifested by the chip burning, and the motherboard needs to be replaced with a warranty (because the graphics card chip is integrated on the motherboard, it can only be replaced together with the motherboard).

3. It may be that the cable of the notebook display is broken or the display screen is damaged, and the display screen needs to be replaced with a new one (the cable cannot be repaired, because it is integrated with the display screen).

The graphics card and memory are the most problematic. Memory problems usually cause a blue screen, and graphics card problems usually freeze the screen or restart with a black screen for no reason. Motherboard issues can also be hacked for no reason.

It is also possible that the graphics card or memory is not working properly due to a problem with the motherboard. The most practical method is the substitution check. Or buy a motherboard error detection card.

Nowadays, high-end motherboards all have error detection cards, which are the LCD screens that jump around on the boot motherboard.

The black screen of the computer is not enough memory or battery, you can restart it to see, if it doesn't work, go fix it.

If the computer data cable is aging or there is a microwave oven next to the computer, it is strange if the computer does not have a black screen if there is a microwave oven next to it.

Here's how to fix it:

The first reason: system failure.

If there is a problem with your computer's system, such as incompatible patches, software, or drivers, or the system itself is missing some files, it will lead to a black screen.

1. Turn off the computer and turn it back on while turning it on, press and hold the F8 key on your keyboard to enter the advanced boot options.

2. After entering the advanced boot options, select the last correct configuration from your advanced boot options. Then press enter, and after the execution is completed, you can enter the system.

Third reason: the BIOS is not set up properly.

Just press F2 to enter the BIOS, then enter the boot menu and set your hard disk as the first boot item in it.

The fourth reason is the motherboard or the memory.

If it is caused by your computer's motherboard or memory, you can teach your computer to boot to see if your memory module is Bao Dong or whether there is dust to check your hard disk, or whether there is a problem with the motherboard.

Virus Trojan is the cause of the sudden black screen of the computer, first check whether it is caused by hardware problems.

This kind of Trojan is mainly spread through some fraudulent software, disguised as **** software, ** software and other popular software, the Trojan invades the computer after first modifying the system's boot startup items, and then boots through the computer, tampering with the browser homepage, and constantly popping IE web advertisements and fake QQ winning information.

Check the power supply, memory CPU, and fan separately, if you don't know how to repair the hardware, it is recommended that you do not operate it yourself, please take it to a professional computer repair point for repair.

The laptop screen is black, it may be a problem with the software or hardware.

One, the black screen caused by the software.

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 laptop caused by the software. If the black screen is caused by software, take the Windows system as an example, you can restart the machine, press the F8 key several times when booting up, and bring up the system's boot options menu.

Once 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.

Second, the hardware causes the laptop to have a black screen.

Hardware-induced black screen for the following reasons:

1) The cause of static electricity, 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 start of the laptop several 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.

2) The memory is loose or the memory has a hardware failure. There are several major components of a laptop computer, including the CPU, motherboard, memory, and graphics card. These parts are indispensable, as long as one of them has a problem, it will cause the laptop to not function properly, the most common is that the boot does not respond.

In general, the probability of CPU and motherboard failure is relatively small, and it is more common for the laptop to fail to boot due to loose memory. At this time, first remove the battery and power supply of the notebook, if it is not difficult to remove the computer, you can open the back cover of the notebook by yourself and reinsert the memory. After plugging in the memory, power it on again, start the machine, and see if you can solve the fault.

3) The LCD part of the notebook is faulty. There are some notebooks that are a little older, and this may be the case. Display components generally include displays, data cables, and some other small parts.

If you have a desktop monitor, try plugging it to the VGA display connector on your laptop, and then switch the display to the VGA external display on your laptop. If you can switch to an external monitor, it means that there is a big problem with the display part.

4) The graphics card hardware is faulty, 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, the average user can't solve it, and the only way to solve it is to find the computer's after-sales service. If the notebook is within the warranty period, it can be taken for free inspection and repair.

If you don't go out, don't use the battery... If it's more out of the home. Just buy one.

There is no portable hard drive or USB stick plug plugged.

Then the battery is broken! If you have a guarantee, if you have a guarantee, go fix it.