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.
Sata data doesn’t do enough power to cause any damage to itself. Serial data lines don’t care if you short them. Sata power has grounds in the way so you can’t send 5v to 3.3v or 12v to 5v.
You’ll break the sata cable before you cause any damage to your computer (ask me how I know)