Cant even boot to windows anymore

Ive tried swapping out ram, video card, and hard drive. The computer acts like its over-heating, but i cant figure out What is overheating.. nothing feels all that hot, yet the computer reboots when trying to boot to windows, and each attempt, reboots sooner (as if its gotten hotter).

I checked the bios and monitored the temps/fan speeds for a bit. The CPU reached 110F before even BIOS locked up. The only thing i did differently, is take it out to the garage so i could use the air compressor to dust it out.

Is the motherboard failing? its not all that old so i don't see why it would be, but its the only other thing i could think it could be.

What about trying to swap out PSU's? If the computer is drawing too much power from the PSU, it could cause the machine to reboot... or maybe the PSU is starting to fail.

That would be bazzar. The PSU is the main reason i pulled it out cause i needed to switch it. But i took out the old 350W and put in my 430W. I did it because the 350's fan is dead (more precise, it locked up) But ill try swapping it back and see what that does.

[edit]

Hiker, you were right. Something is screwie with the PSU. I hooked the old one back up (with only the mobo and hdd plugged in) and it booted fine. Thats completely weird cause i know the 430 worked fine when i took it out of my other computer (i upgraded that one to a 600W because of the video card)

I don't understand why its having problems with the stronger PSU in it.. its weird. Ive installed psu's before and i know the volt setting is correct. cant think of anything i missed that would mess it up. any ideas? (the only thing i could possablly think would be different is the actual power cord going to it might need to be bigger, but i dont see how that would make a difference.

(btw, the 430 has specal fan power connectiors that regulate the fan speed based on temp, so all of my case fanes are not at full speed 100% of the time, i wouldv'e thought that would mean less power draw)

Could possibly be one of the molex connectors has a short or not working properly. Could even be that a connector that has the short may still be able to work for powering a fan, but not enough power to power a video card.

maybe, but i unpluged everything save the ATX connector into the motherboard. After swapping it back to the 430, it wont even do anything except turn on and the mother board beeps at me.

I just ended up replacing the fan in the 350 PSU (just opened it, and ran an normal molex fan out with the cord bundles) so its up and running and staying cool again.

Would like to find out wtf is wrong with th 430, id like to get more use out of it :\

Thanks for the suggestion of the PSU tho, ida been at trying to figure out what was wrong with it all weekend.