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.
Here’s how I would troubleshoot that:
[EDIT] Obvious but very important when you power your PC, if anything starts smelling like smoke, stop immediately. You don’t want a house fire on top of your dead PC.
Let us know how it is going! Good luck!