My friend has an AcBel CE2 500W (max 550W) psu in his rig with the following specs:
intel i5 2400
8gb ram @1333mhz
Recently he has been having problems relating to his gpu. Sometimes, upon startup, his monitor reads 'no signal' even though the hdmi cable is plugged in. Also, when his pc is running fine the display randomly freezes while doing normal tasks (e.g. internet bowsing, word, etc) and the only way to recover is by doing a forced restart.
We have tried changing the hdmi cable and both the 12.10 & 13.1 catalyst drivers but the problems still persist.
I think that the problem may be the psu (not 100% sure though) because it is made by AcBel, which isn't known for good psu's. Can anyone confirm this for me? Nothing has been overclocked in the rig.