Possible Overheating.

[miztamajic]

Ok, so yesterday i was gaming on my pc, and then all of a sudden one of the fans inside my PC was going crazy and my pc rebooted, so then i just turned it off and decided to open the case and examine blow some dust out ect, i left it opened and turned the computer on, and it just goes crazy again and reboots before i even get back into windows, So then i set down the tower on its side and turned it on and it was back to normal like nothing had ever happened, im not quite sure what to do or whats wrong with it, so i come here for some help .

My specs:

AMD x2 4400+
7900GT
2GB DDR2 RAM
300gb HD

 

[Ste]

Core temp or speedfan 5 to moniter cpu temps.

And everest home for all temps.

 

[turtile]

The fan on the 7900GT is most likely coming loose causing the noise (when it hits the heatsink). If it works on the side, its most likely the fan coming apart.