Note on archived topics.
08-07-2016 03:00 AM
This issue started towards the end of January/early February
08-07-2016 08:12 AM - edited 08-07-2016 08:13 AM
Allow me to welcome you to the HP forums!
My guess, from your description, is that the power supply unit (PSU) is dying -- which would not be unusual for an 8-year old PC that has been used regularly.
I had a similar situation in a 2005-era HP Media Center desktop -- and replacing the PSU brought it back to life. Not bad for a $50 equipment purchase!
Unfortunately, we have no links for testing a PSU and in that case, your only recourse is to take the PC into an HP Service Center and have them look at it -- which, since it is out of warranty, will likely cost you a LOT more than simply replacing the PSU.
Here is a link with information on HP Service Centers: http://support.hp.com/us-en/document/c00372730?jumpid=reg_r1002_usen_c-001_title_r0004
Sorry, but this is just a community forum staffed by volunteers and we have no way of troubleshooting or repairing your PC from here. All we can do here is provide links to troubleshooting steps that HP has written, and links to HP drivers.
***Please mark Accept As Solution if my post solved your problem***
I am a volunteer and I do not work for, nor represent, HP