More overheating questions...?

i guess to clarify ( i know i have been asking a lot of questions about this) my power source that came with my case went out in sept/oct of last year.At that time i was having similair shutdown problems. I had experienced no problems in over a year and a half before this source went out. The source went out right after i moved from one apartment where my former roommate had continued to use my computer while the A/C was out (in texas). I lost a RAID out of that, and i believed the power source. i replaced it with an altec that i figured would get the job done. the old one i believe was 450 watt (or whatever the pull is) the new one was 500 watt. I had no problems for a couple of months (that i know of, all though owner of this computer i have strayed from being primary user since i got my laptop). Could it be the power source again? Would i still have warranty? How can i tell? I edit video on this computer and really need it repaired.

More overheating questions...?virus protection

A previous answerer provided this info:

The Intel P4's have a throttling function to prevent it from overheating. What it does is lowers the CPU clock speed when it detects the processor reaching a certain temp. It should not cause the computer to just shut down. It is more likely that the heat problem is related to either your memory, motherboard or video card. After it shuts down on you, feel the Heatsinks for the processor, North and South bridge on the motherboard and on the video card. They should be fairly hot, but not too hot to touch. If one is too hot to touch, then that is probably your culprit. If everything feels fine, then it is probably not a heat issue but some other problem. You should not need water cooling.

For whatever it's worth, I agree with this advice. For a free utility that does a real good job scanning your entire computer, try Belarc Advisor. Easy to download, easy to run, easy to uninstall if you don't feel like keeping it on your computer. It might be able to pinpoint the problem area(s):

http://www.belarc.com/free_download.html

If this doesn't help, you might need specialized testing equipment (a repair shop) that can simulate actual loads on various components to see what is failing and under what conditions.

plrr