The other day I was playing Left 4 Dead 2 when suddenly, without warning, my computer simply shut down, as if the power plug had been pulled out. I tried restarting it, but nothing (NOTHING) happened. No fans would turn on, the mobo would not post, it was just dead. I opened up my case to see if something important had simply come loose, but found nothing unusual. I tried again, and all I got was a very brief (fraction of a second) flash from the mobo's troubleshooting LED's (to brief to even bother deciphering), and one of the fans started up, but again, only for a small fraction of a second. I took my computer completely apart, put it back together, but still nothing.
After some thinking, I realized it was most likely that the power supply had died. It was an Antec Basiq 550W. My cpu is an AMD Phenom x4 9650 oc'd from 2.3 GHz to 2.8 GHz (which had been running stably for over a year), my gpu was a pretty new eVGA GTX 460 SSC edition (I just got it about a month ago), and then of course RAM, some hard drives, fans, etc. I figured 550W must have just not been quite enough and it finally buckled under the pressure (although I had played L4D2 for many hours on it with that same setup with no problems.)
So I went to a local electronics store which fortunately had a pretty good deal on a Zalman 850W psu. This would certainly be more than enough for my system, so I bought it, installed it, and to my delight, it started right up again. Then, since I had cleared my CMOS earlier in trying to fix my initial problem, I was playing around with it trying to get it back to its original oc level. At one point I had it at 2.6 GHz, ran Prime95 for 10 minutes (obviously not very long, but the temps plateau-ed at around 65C.) Then I decided I would try playing Left 4 Dead 2 again, mostly just to see how stable it would be. And after maybe 10-15 minutes, to my horror, it shut down again and would not turn back on. Just like before. I can probably return the Zalman psu to the store (or exchange for a new one), but I'm seriously afraid my computer will just destroy another brand new, perfectly good power supply.
Does anyone know why this could possibly happen? I can imagine my computer maybe just shutting down due to instability, but to totally wreck the psu?? They are supposed to have all sorts of failsafes against this, like overvolt/overcurrent/short-circuit protections. And this was not some no-name cheapo psu either. Could it possibly be due to my motherboard somehow? It is an MSI K9N2 SLI Platinum, not quite 3 years old. Or maybe it's just my attempts to overclock? I could just leave it at its stock clock speeds if I need to. Please, anyone, I have never encountered such a precarious problem and I'm afraid to even try anything again!
After some thinking, I realized it was most likely that the power supply had died. It was an Antec Basiq 550W. My cpu is an AMD Phenom x4 9650 oc'd from 2.3 GHz to 2.8 GHz (which had been running stably for over a year), my gpu was a pretty new eVGA GTX 460 SSC edition (I just got it about a month ago), and then of course RAM, some hard drives, fans, etc. I figured 550W must have just not been quite enough and it finally buckled under the pressure (although I had played L4D2 for many hours on it with that same setup with no problems.)
So I went to a local electronics store which fortunately had a pretty good deal on a Zalman 850W psu. This would certainly be more than enough for my system, so I bought it, installed it, and to my delight, it started right up again. Then, since I had cleared my CMOS earlier in trying to fix my initial problem, I was playing around with it trying to get it back to its original oc level. At one point I had it at 2.6 GHz, ran Prime95 for 10 minutes (obviously not very long, but the temps plateau-ed at around 65C.) Then I decided I would try playing Left 4 Dead 2 again, mostly just to see how stable it would be. And after maybe 10-15 minutes, to my horror, it shut down again and would not turn back on. Just like before. I can probably return the Zalman psu to the store (or exchange for a new one), but I'm seriously afraid my computer will just destroy another brand new, perfectly good power supply.
Does anyone know why this could possibly happen? I can imagine my computer maybe just shutting down due to instability, but to totally wreck the psu?? They are supposed to have all sorts of failsafes against this, like overvolt/overcurrent/short-circuit protections. And this was not some no-name cheapo psu either. Could it possibly be due to my motherboard somehow? It is an MSI K9N2 SLI Platinum, not quite 3 years old. Or maybe it's just my attempts to overclock? I could just leave it at its stock clock speeds if I need to. Please, anyone, I have never encountered such a precarious problem and I'm afraid to even try anything again!