The computer boot has two vertical bars, and the other is all black

Try it in safe mode. Press F8 immediately after booting or not turning on the first press F8 to the advanced option to let go of the hand, use the up and down keys to select the safe mode enter, enter the safe mode and use the software to kill the Trojan, uninstall everything installed before the accident, restore the system or reinstall the system (if you can enter the safe mode, it means that you have installed something inappropriate, uninstall all the inappropriate things before the accident, and you are hit by the Trojan, use the software to kill the Trojan, if not, restore the system or reinstall, If you can enter normal mode, do the same in normal mode as above).

If the above methods can't solve the problem, first soft and then hard, reinstall the operating system, don't install software, patches, drivers, etc., and see if there is still a problem with booting? If you don't install drivers, patches, and software step by step, and find something that isn't suitable, don't install it.

Please note: If you restore the system or reinstall it, when installing drivers, patches, software and other things, be sure not to install the things that affect your accident this time, otherwise it will be restored or reinstalled in vain.

In terms of hardware, such as hard disks, memory, graphics cards, motherboards, etc., if there is a problem, if it is caused by hardware problems, it is recommended to overhaul it.

Probably the problem with the graphics card or the graphics card driver, it may be that the driver is not compatible.

The computer is turned on black, and a horizontal bar is flashing:

1. The operating system file is corrupted.

2. The MBR meter is damaged.

3. The hard disk data cable is loose.

4. The hard disk is broken.

Solution: 1. Reinstall the operating system.

2. Use a U disk or CD to boot, enter the PE system, and use partition software to repair the MBR table (some software is called repair boot).

3. Check the hard disk data cable and power cable, plug in the connector tightly, and replace it with a new one if the cable is broken.

4. If you can recognize the hard disk in the BIOS, try to reinstall the system, if you can't reinstall it, try to repartition the hard disk, if you can't divide the area, try to format the hard disk at a low level. I can't recognize the hard drive in the BIOS, so I can only replace it with a new hard drive.

The computer boot monitor has regular streaks, which is usually a problem caused by a faulty graphics card.

2. The graphics card line is aging, and this problem is more likely to occur the longer the graphics card is used.

It is usually necessary to improve the heat dissipation conditions of the graphics card, such as adding lubricating oil to the graphics card fan, cleaning the dust on the surface of the graphics card script, and adding case fans.

For faults caused by aging graphics card circuits, there are basically only two options: detecting and repairing the graphics card and replacing the graphics card.