Right i got myself a 600W EzCool power and it worked fine in my new gigabyte p31 mobo. 3 days later it turned itself off and would not work, I thought nothing of it went to bed and the next day it was working again. However a few hours into the day it turned itself off a few more times, and eventually would not boot whatsoever. Put my old 420W back in works fine and is quieter than what was meant to be a 'silent fan' that always ran quite loud. Is there anyway to find out if the EzCool PSU is dead as it did not blow or anythin, it just refuses to work and the fan inside wont spin. When i try to turn my pc on the fan on the CPU spins for about a second and dies but nothing from the PSU fan, any help would be appreciated thanks.