I was trying to fix my Dad’s PS3 (he recently passed away) nothing was working, so I connected the HDD from the PS3 into my PC. Upon plugging in the SATA cable, the entire PC shut off. I unplugged the HDD, but now when I power on the PC, the fans just run at max speed and nothing else happens. I don’t know how to troubleshoot this problem.
First thing I’d check is unplug all sata cables from the board, turn off your power supply, give it a few minutes, then turn it on, then your PC.
PCs are loaded with poly fuses that self reset after some time. It can take up to a day for some really fickle ones. So maybe just sleep on it.
While you’re waiting/unplugging inspect the hard drive, the sata cable, and the port for damage.