Launch a Windows repair
If your PC doesn’t boot and all you see is a black screen, turn it off and on again a couple times. After doing this repeatedly, the Windows Startup repair should launch automatically. Click Restart and hope that this fixes your black screen problem.
Then, Why has my computer screen gone black?
A black desktop screen can be caused by loose connections in your computer’s circuit board or various cords. … If you don’t see a standby light when you connect your monitor to the power outlet, it could be an issue with the monitor or power cable.
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