My motherboard?

[Boetspoed]

My PC does not power up. This shortly after a red led flash and shutdown.

[WAWood]

@Boetspoed 

I don't know what it is you expect us to do from here.

According to the HP specs I could find, this model PC came out in 2010 -- indicating it is LONG out of warranty.

Not only does HP not sell motherboard replacements, with one this old, it is unlikely you would be able to find on online.

Since your PC is no longer under the original warranty, you can contact HP Customer Support, but they will charge you a fee to put you in touch with HP Technical Support.

If you live in the US or Canada, contact information is on this page: http://www8.hp.com/us/en/contact-hp/phone-assist.html#section1

If you live elsewhere, contact information is on this page: http://www8.hp.com/us/en/contact-hp/ww-contact-us.html

NOTE: After you get through, stay on the line until you are finally able to talk to some one -- it can take a while!

If you have trouble finding a phone number, then try: 1 (800) 474-6836
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If you don't wish to pay to talk to HP Technical Support, to have HP look at it, your only recourse is to take the PC into an HP Service Center or ship it there.

If you live in the U.S., here is a link to the HP Service Repair Centers:
https://www.service-center-locator.com/hp-hewlett-packard/hp-hewlett-packard-service-center.htm

If you live outside the U.S., here is a link to HP Service Centers, by Country/Region: https://support.hp.com/in-en/service-center

Good Luck