CPU keeps overheating and shutting off my PC.

Bailout1

Honorable
May 11, 2013
15
0
10,510
Upgraded an old packard bell iMedia 3064 with 2GB of ram and a new heat sink with fan. However since before this my computer keeps shutting off randomly and is even worse after adding these upgrades. Anyone know what might be wrong with it?

It reaches around 90-100 degrees after just turning it on, I'm not sure what the issue is. I have applied thermal paste and it's not a static problem.

Power supply info: http://bit.ly/11GY68M
New fan: amzn.to/12FR6fL
- Also there is no video card and only around 500GB.