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HP 520 AIO PC stuck on HP Splash screen

Have an HP 520 AIO PC that only boots to the blue HP logo screen and will not enter BIOS or POST.

Removed the hard drive and ran SeaTools to check hard drive which did not detect any issues. Also ran chkdsk /f and sfc /scannow without error. Removed RAM and replaced with known good RAM. Same issue.

Can't boot to a USB OR DVD either to troubleshoot or update BIOS since can't change boot order.

Does the same thing if try to boot without the hard drive.
If boot without RAM, it beeps as though it recognizes the RAM is missing.

I hate to recommend this gentleman get a new PC since its just out of warranty and also has a nice i7 intel.
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mikesmithccs
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Hello?
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Have a look here at the troubleshooting steps.

http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c03561545-4

http://support.hp.com/ro-en/document/c03513214

The hard reset method in the second document might be one way to go.

Also look at tapping F2 repeatedly on startup before the logo screen appears (as soon as you hit the power button) to see if you can get to the BIOS.
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mikesmithccs
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