I have been having this problem for about three months.
When I boot up my PC, everything starts up normally but then around 15 minutes in, the entire machine shuts off, right to a black screen. Upon trying to boot up the machine, it power cycles and I can't get it to start up. I have to wait...
I have had a power cycle problem for about a week now on a computer I have owned and used with no issue for 4 months (custom built). I thought it was a PSU issue at first when the power cycle problem started so I ordered one from eBay (arriving soon). After three days, though, I decided to boot...