bad connection desktop and screen
@PH66 Welcome to HP Community!
Please provide the product number.
Meanwhile, Please attempt the below steps:
Attempt a BIOS recovery
If the above steps work and the display turns on/if not, use an alternate monitor and then: Perform a hardware test to be on a safer side.
If the steps didn't work, use the below links for further assistance:
Computer Starts but Monitor/Screen Remains Blank: Click here
Keep us posted,
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