[Mr. Maggot]

Thats not a problem with either of ur hardware. I had the same problem. In my case, there was a problem with the power supply i.e. the voltage fluctuates.

Try switching off and on the power(socket) and then turn the cpu on.... it worked in my case.

Beware u may have to do it quite a few times though.

An easier solution is to connect the computer to a UPS... which stabilises power.