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HP EliteDesk 705 Won't Power On After Power Outage

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EliteDesk 705 G1 Mini
Microsoft Windows 10 (64-bit)

I'm sure this question has been asked several times over. I woke up this morning and a few minutes later we had a very brief power outage, and when the power returned the PC would not power back up again. I spent a couple hours online trying to find a solution but none of them have worked.


I have tried

(a) Unplugging power, holding power button in for 5+ seconds -- no result

(b) Removed CMOS battery and depressed the CMOS reset button for 30 seconds+, replaced battery -- no result


There are no visible signs that it is attempting to power up. No flashing LED, no fan spinning, as well as no weird smells coming from the board .. I just purchased this machine no more than 3 months ago.


The sticker on the machine identifies it as SYS/HP/705/MDT/AMD 


Listed on HP site:


Until today everything was working perfectly. Any ideas?

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Update: Problem has been resolved. I decoupled the power cord from the block, waited a few seconds, plugged it back in and the machine magically powered back up again.


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