|"I changed my power supply, my motherboard and put a new Cpu cooler on as well and my temps have been running really low"|
How far did the tower fall? Randomly replacing parts is not a cost effective way of troubleshooting. Did you replace the board with the exact same make/model? As for the PSU, you didn't provide any info so we don't know if you upgraded or downgraded. Increasing the wattage isn't necessarily an upgrade if the PSU is spec'd out poorly. Do you here a click just before the system restarts?
If you haven't already done so, try disabling the auto-restart feature. That way, a blue screen error message will be displayed instead.