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All in one loud 3 slow deep beeps and 4 fast high beeps

All in one
When I turn it on it has 3 slop deep beeps then 4 high pitched fast beeps. The screen doesn't come on either.
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HP Recommended

All in one loud 3 slow deep beeps and 4 fast high beeps

See: HP and Compaq Desktop PCs - BIOS Beep Codes

 

to match the pattern against the possibilities listed in that document.

 

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All in one loud 3 slow deep beeps and 4 fast high beeps

Hi,

 

If you have a machine that was made in 2016 or after, then there's a chance it could be the AC adapter. If you have connected an incorrect or faulty adapter, this will result in POST beeps.

 

Can you let me know the model?

 

Thanks.

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