How to fix the computer that can t turn on and the blue screen display system is turned off?

1.Check whether the monitor and the main unit cable and connector are connected;

2.If the external monitor sees that the system has started normally, then you can check whether the switch button above the keyboard for turning off the power supply when the display is closed is normal;

3.If the external monitor and the pop-up display power-off switch are all right, the display cannot be displayed, then it may be a system problem;

4.If you are unconditionally connected to an external monitor, please reboot it and pay attention to whether the display screen is black at the beginning of the system boot in the DOS boot state. If the screen is also black when the DOS boots, and there is no normal self-test sound, it is mostly a system failure;

The startup disk may be set up incorrectly. Solution: Modify the hard disk mode. Boot up, press F2, F10, F12 Delete (depending on the motherboard) to enter the BIOS, and set the first boot disk as a CD, floppy disk or U disk to a hard disk (harddisk);

6.HDD MBR error can be reset with DiskGenius;

7.Check whether the optical drive, USB flash drive, floppy disk, etc. are inserted, if so, you can take them out and try to turn them on;

8.Enter the BIOS, modify the hard disk mode, set different modes and try to restart to see if it can boot;

9.Press F8 to enter the mode, and select the latest correct configuration or normal startup.

10.If none of the above methods can be solved. For desktop computers, please disassemble the case, unplug the hard disk cable and reconnect it, and then see if it can be started; During the boot process, listen to and touch the hard disk with your hands to see if the rotation is normal;

11.The one-size-fits-all approach: reinstall the system.

Check whether the monitor and the main unit cable and connector are connected;

Summary. In general, this may be caused by a hardware failure, or a major component, such as a CPU, hard disk, memory module, etc. It is recommended to check the hardware first, re-check whether there is any problem with the hardware components, and then take action after confirmation.

If it's a software problem, or if there's a problem with a hardware component, you can try reinstalling the system, resetting the system to factory defaults, or repairing the system files. I hope I can help the little master<>

The computer suddenly shuts down automatically, and the blue screen at boot is up, and the computer's startup repair can't fix what's going on.

In general, this may be caused by a hardware failure, or a major key slag component, such as a CPU, hard disk, memory module, etc. It is recommended to check the hardware sold first, re-check whether there is a problem with the hardware components, and then take measures after confirmation. If it's the cause of the software bands, or if there is a problem with a hardware component, you can try reinstalling the system, resetting the system to factory defaults, or repairing the system files.

I hope I can help the little master<>

Will resetting the system affect the files of the C drive?

You need to back it up in advance<>

If you don't back it up, it's gone

How do I back it up? 1.Copy:

Using media such as USB flash drive or CD *** to copy the data in the hard disk to these media is relatively simple, but the amount of data copied is limited. 2.Shrinking:

Compress the data that needs to be backed up, use U disk or CD *** and other media, and store the compressed files in the media, which can store more information about the Imperial Peiduo, but you need to install compression software. 3.Network Backup:

Using a cloud storage service, you can back up the files in your hard drive to a cloud server, which not only can you back up quickly, but also there is no limit to the amount of data, and you can buy more storage space according to your needs. I hope I can help the little master<>