Windows installed new several times. Drives formatted. No effect.
CPU idle: no usage.
Temp. of the processor not above 50 degrees Celcius.
When it comes out of the stall it quickly says 100% cpu usage and then goes back.
When i look at the processes there are no processes using the processor at that time.
Memory tested several times. No problems.
Tried Prime95 to test processor and stuff. No problem there. Well it stalls during some tests, but the program doesn't regonaize a problem.