Is the computer like this?

  

This is the computer?



This is a problem with poor line contact.

Unplug the computer's wire number (two ends), re-insert it, and tighten the screw of the plug (this must be noted, it is likely that you did not screw the two screws of the plug, so Just touch it and you have a problem.)

If you can't solve the problem after doing this, you can only reinstall the program system.





Unloading the system



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