Hi, was just after some help/advice. I have a Arctic Cooling Freezer 64 Pro on a socket 754 3700+ and all has been well for a while, I remember checking when I 1st built and my cpu temp was a tad over 30C. Ive recently found my PC has started rebooting, and the temp seems to be around 70-80C - thats high right? Happened 3 times now, always under heavy load (games). Is 70C hot enough to kill a CPU? Is that likely to be the cause of my reboots? Could something have happened to the fan to hamper cooling performance? Could it be because Ive moved my PC to a "hide away" PC desk - it is open backed and with the same wall clearence as ive had in the past (10cm maybe), so i wasnt expecting a huge diff?! Would installing a case fan help lower the CPU temp (I got a free one with my PSU)? I have a ICEQ cooler on my x800xl that passes air out the back. Could it be that we're heading into summer and now that my room isnt -5C Im hitting probs ! Not sure what to do next, re-attach the cooler? Get a new one (is there anything better?)? Try relocating the box? Add a new fan? Many thanks.