Hi guys! I just got a message from my friend saying his PC shut off and can't get it to work again. I told him to unplug the PSU and wait for 15mins and the try again (worked for me a few times). Well long story short he said his PC boots when he disconnects his primary OS drive (out of 2 HDDs). But when he connects it back the PC doesn't boot. Any pointers? I think he had this problem before too. Thanks in advance!