Since I received this desktop this has been an on and off issues.I bought it brand new. Past two months its 3-5 times a night. A night I mean between 5-11 pm. I play Runescape. Might hit eBay, FB or some other sight. It crashes turns off thinks about restarting. I have to pull the plug wait and then plug it back in. I have replaced hard drive, video card. I have looked into the event viewer and seen this every day 3-5 times since new harddrive kernel - power event id 41 critical 018 task category 63. Would this constant problem be from power supply unit? The power cords are fitted tight. And I have changed from back power units to power strips now to see if that is the problem. I am at 600 for a company to keep looking at this rig and not getting anything fixed. TIA