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‎02-03-2026 03:04 PM

HP Recommended

Can anybody help me why my computer won’t turn on and when I do turn it on it’s giving me three slow beeps followed by for fast beeps. It tells me there was an invalid adapter install installed and to press escape for a menu, but it won’t let me get to the menu

1 REPLY 1

‎02-03-2026 05:10 PM

HP Recommended

See the troubleshooting guide at the link below for how to troubleshoot the 3.4 beep/blink code:

 

HP Desktop PCs - Computer beeps or a light blinks during startup | HP® Support

 

Could be a faulty power supply.

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