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HP Envy All-in-One won't start up, just shows "Check Video Cable !" Message and powers down.

HP Recommended
HP Envy All-in-One 27 inch

I was using the computer just fine last week, but now when I am trying to boot it up I am receiving an error message. I turn the computer on, the hp logo appears, then i receive a "Check Video Cable !" error message and the computer powers down. I've tried restarting it various ways but nothing seems to work. 


EDIT: Listened to the virtual assistant and tried a BIOS restart and now I only receive the"Check Video Cable !" error message occasionally but now with loud beeping. F

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HP Recommended

First:- Turn off the computer, press and hold the PWR button for 4 seconds.

Then - Leave only keyboard and mouse connected, disconnect all externally connected
devices such as Docking Station, USB storage devices, displays, and printers.
Unplug the AC adapter from the computer.

Next - Press and Hold the Power button for 15 seconds to Hard Reset.
Rinse and Repeat; Re-Connect the AC adapter.

NOW begin checking/testing/proving the Hardware is fit for purpose.
Power on your PC, press ESC (repeatedly), then F2 at the prompt.
Choose System Tests (Fast Test does a 4 minute hardware check).




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