Originally Posted by Vagrant Storm
That would definitely be artifacting...have you checked to make sure your cooling fan on the graphics card is still running? Running any temp monitoring software? If the temps are OK...signs that would make me think the PSU are bad would be the machine is able to idle fine, but then locks up and/or shutdowns when you stress the system, but the PSU could end up being step one in the trouble shooting process.
A system lock up is caused by some sort of unrecoverable error...so unrecoverable it can't even dump you to a Blue Screen of Death. That instability can really be caused by anything...it is just that it typically seems to be due to the PSU not getting enough power to the components in my experience...though I've seen it caused by failing HDDs, motherboards having issues, even a fan wire that was shorting out.
Really the only way to know if a PSU is bad is to replace it and see if it works or try it on another system with a comparable power draw unless you have a PSU tester or know your way around a multimeter...though even a multimeter can miss a bad PSU since it doesn't really duplicate a system under load. Looking at the voltages in the BIOS might give a small clue, but only if one of the values are off by a lot. It isn't unusual for the voltages to be listed a little lower than normal in the BIOS.
oh wait you mean the fan for the hsf or case fan? i noticed that when i move the cover of my case and accidentally hitting the cable which connects to the case fans, the leds are blinking..
ive tried changing hdd, still freezing.. so hdd is clear...
by the time the 7870 arrives i'll monitor and observe it.. and probably get a new psu, is 650w ok ? i think i'll be getting corsair or thermaltake..
and i'll check the bios too..
one thing , before this problem occured, i have this deep cool hsf fan, and noticed that it cracked then i change it to stock fan.. after changing it back, the freezing/lock up started..