I have a PC i built about a year ago, everything worked great in that time. The other day the PC Shut down without warning (no programs running or anything). I thought it might be an issue with the PSU, so i tried running Self test on the PSU with each modular cable plugged in, and it only fires up when half the 24Pin cable is plugged in ( the half with 10Pins is the one not working, just get a click). So everything but the the CPU fan is not firing up. I tried the self test again with the full 24pin by unplugging different cables on the mobo to get it to work but nothing is happening. Please help guys, thank you so much!