The computer brakes and turns on, but it can t be turned on, and it can t be turned on normally for

If there is an error in the system, either reinstall the system, and the BIOS settings U disk into the PE background for repair.

Driver problems or viruses. I've come across it.

At this time, although you can't move the mouse, the keyboard may be usable, and you can log in with the keyboard, but logging in can't solve the mouse problem.

Method 1: Press F8 to enter safe mode when booting up, if the driver is fine, the mouse is easy to use in safe mode. Then try to completely antivirus, and update each driver to the latest version of Microsoft certification (without Microsoft certification, update to the latest official version).

However, since the ability to kill soft is limited, and the driver is not without bugs, method 1 cannot guarantee that the problem will be solved. If method 1 doesn't work, use method 2.

Method 2: Reinstall the system. After reinstalling, don't install those niche software (such as **, finance, cracking or something, the most likely to have viruses and Trojans); Back up a system with ghost.

Then install the software you commonly use, it is likely that after you install the commonly used software, the fault appears again, then you can restore the system, and then install a few, one by one try which software caused the failure.

It should be a problem with the system.,Set the startup item to the optical drive after restarting.,Then put it into the system disk.,Restart it again.,Enter the installation page.,Grid C disk reinstall the system.。

Is it a virus? Try reinstalling the system.

If there is a bad sector in the hard disk, you can just change the disk.

The hard disk has a bad sector, you can change the disk and reinstall the system

Unplug your memory module and graphics card and plug it back in.

In fact, there are many reasons why it can't be turned on, such as no power and memory sticks, which need to be checked one by one, if there are no problems, you need to take it to the repair shop to check.

1: Check if the power supply fan is rotating after turning it on?

2: Disassemble the side panel of the case and check if the CPU fan is turning.

3: You can plug and unplug hardware such as: memory, graphics card, hard disk data cable, etc. Turn it on again and see if it can light up.

4: It can be eliminated by hardware replacement, such as: replacing the memory, graphics card or even the motherboard. It is only through replacement that you can find out what the problem is.