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computer won't power on, requires unplugging from wall to fix

post #1 of 11
Thread Starter 
This is the 3rd time it's happened to me - power on my computer, runs for about 1 second, then shuts off. It won't power on again (no response upon pushing the power button at all) until I switch the surge protector off and then on again, or anything else that completely separates it from the wall power outlet. My board, CPU, and PSU are all less than 6mos old. What gives?
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The Butthurt Box
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post #2 of 11
double check the front panel connectors

and test with a different power supply
post #3 of 11
Thread Starter 
this is a new build...only option would be to buy another psu :/
the front panel connectors have already been removed and re seated the first time, this is the second time after I checked them
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The Butthurt Box
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post #4 of 11
Cleared cmos?
   
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post #5 of 11
go to bios, check the voltages, see if anything is +/- 5% or more
http://pcsupport.about.com/od/insidethepc/a/power-supply-voltage-tolerance.htm

a 750w psu shouldnt have any issues with your sig rig
post #6 of 11
It is not a short. If it was then it would not stay on that long. This tells me that the PSU is overloaded. Somehow. I don't know how. But that is the diagnosis from this Geek.
    
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post #7 of 11
Quote:
Originally Posted by Enigma8750;11858100 
It is not a short. If it was then it would not stay on that long. This tells me that the PSU is overloaded. Somehow. I don't know how. But that is the diagnosis from this Geek.

Remove one of your cards see if it works.
   
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post #8 of 11
Try the 12V CPU connector. Might be loose or the clip that keeps it in might be broken.
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The AMD machine
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post #9 of 11
Thread Starter 
Hmmm, the CPU is running @ 1.488v according to speedfan and CPU-Z (told BIOS to run @1.5) that seems like a lot more than 5%...
The Butthurt Box
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WD Goflex USB 3.0 24x DVD R/W DL Win7 Ultermate 64 Acer 20in 1600x900 
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The Butthurt Box
(21 items)
 
   
CPUMotherboardGraphicsGraphics
Intel Core i5 2500K P67 Professional AMD Radeon HD 6950 unlock NVIDIA GeForce GTX 460 2gb 
RAMRAMHard DriveHard Drive
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Hard DriveOptical DriveOSMonitor
WD Goflex USB 3.0 24x DVD R/W DL Win7 Ultermate 64 Acer 20in 1600x900 
MonitorMonitorMonitorKeyboard
Compaq 20in 1600x900 17in Dell 1280x1024 19in Gateway 1280x1024 Razer Blackwidow mech w/ cherry MX blues 
PowerCaseMouseAudio
Kingwin LZ-750 HAF 932 + sound activated lights Logitech G500 Rosewill USB headset 
CPUMotherboardGraphicsRAM
Pentium 4 3.2ghz w/ HT HP Intel IGP 4gb Mushkin DDR2 
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post #10 of 11
nevermind my prev post

cpu voltage can drop some thats normal
but the 12v/5v/3.3v are more important

do you have a multimeter?
unplug the psu from everything
use a paperclip to connect green to black (will turn on the psu)
check voltages from black (gnd) to everything else

Power-Supply-Connector-Piouts-Diagram.JPG
Edited by ffejrxx - 1/1/11 at 7:36pm
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