hey. my computer has recently been shutting down by itself... i'll be browsing a website or something and it will just completely turn off... now i went on the bios and checked the temperatures and the cpu temperature is at 150*F which is approx. 65*F. i know this is pretty high... so will getting a new fan/heatsink fix this problem? is my cpu dying? will i be ok if i just get more fans or new fans, or heatsink? for more info, i've never really left my computer on for prolong periods of time... but recently i've been downloading some big files and needed to leave it on for 3-5 days... it's started shutting down by itself after the first 5 day stretch. the computer has an asus a7n8x motherboard, with amd 2400xp cpu, 1gb of ram, 80gb hd, geforce 4 ti4800se video card... thanks for any help in advance..