My PC keeps shutting down randomly
When it shuts down it doesn't just shut down like the power has been unplugged, it turns off as though i have pressed shut down
AMD Athlon II 640
4gb RAM (2x2gb)
ATI Radeon HD 4830 512mb
Corsair CX430 (modular)
It has worked fine for 5 months. I haven't done any overclocking.
Thanks in advance