Screen going totally blank

[Notaclue21]

My screen on occasions goes totally blank and no amount of key pressing or mouse use will get it back it requires a total switch off and restart... any suggestions?

[Nal_NR]

Hi @Notaclue21,

Welcome to the HP Support Community. 

I'd like to help!

This may be due to a loose connection. Kindly check if the cables are correctly connected and not loose. 

Perform a hard reset

If your computer suddenly fails to boot properly, perform a hard reset (power reset).

For detailed instructions on resetting your computer, see HP PCs - How to Power Reset Your Computer.

Turn off the computer.

Disconnect the AC adapter.

Remove any discs from the disc drive.

Remove memory cards from the card reader slot.

Disconnect all nonessential peripheral devices, such as printers, scanners, external hard drives, and USB flash drives.

With the AC adapter unplugged, press and hold the power button for approximately 15 seconds.

Reconnect the AC adapter, and then turn on the computer.

You may refer to this document and see how it goes. 

Hope this helps! Keep me posted for further assistance.
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