Overclock.net › Forums › Components › Power Supplies › Computer will not turn on.
New Posts  All Forums:Forum Nav:

Computer will not turn on.

post #1 of 13
Thread Starter 
Yesterday I was doing my normal stuff on my computer and then it shut off. I turned it back on then it restarted when it was booting. I turned it back on and it worked and I used it for about 20 minutes then I turned the computer off. 5 minutes later the pc wouldn't turn on, no fans or lights at all would work when I try to turn it on. I thought it shorted out or something so I wait until today and it still does not work. Any help would be appreciated.
post #2 of 13
I know this sounds dumb but, Is it plugged in? Is the breaker off?
post #3 of 13
Thread Starter 
Quote:
Originally Posted by john55576 View Post
I know this sounds dumb but, Is it plugged in? Is the breaker off?
Do you mean the switch on the PSU? Its on and the power cable is plugged in.
post #4 of 13
Quote:
Originally Posted by aquatech565 View Post
Do you mean the switch on the PSU? Its on and the power cable is plugged in.
Check your 4-pins, 6-pins, 8-pins. Make sure they're plugged in properly.

If it still doesn't work, try removing the mobo battery for a minute, press the power button for about 10 seconds while the battery is out, put back the mobo battery and try powering on.
    
CPUMotherboardGraphicsRAM
Intel Pentium E5400 G31TM-P31 (MS-7529) NVIDIA GeForce GTS 250 Kingston (generic 6-6-6-18 @ 400mhz) 
Hard DriveOptical DriveCoolingOS
Seagate 250GB (ST3250318AS) Liteon CD/DVD-RW x22 Cooler Master Hyper 212 Plus Ubuntu 10.10 x86 / Windows 7 Ultimate x86 Dual-... 
MonitorKeyboardPowerCase
Acer X193HQ Genius KB 110 Corsair HX450 Something Generic 
MouseMouse Pad
Genius Netscroll 120 $4 Mousepad from CD-R King 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel Pentium E5400 G31TM-P31 (MS-7529) NVIDIA GeForce GTS 250 Kingston (generic 6-6-6-18 @ 400mhz) 
Hard DriveOptical DriveCoolingOS
Seagate 250GB (ST3250318AS) Liteon CD/DVD-RW x22 Cooler Master Hyper 212 Plus Ubuntu 10.10 x86 / Windows 7 Ultimate x86 Dual-... 
MonitorKeyboardPowerCase
Acer X193HQ Genius KB 110 Corsair HX450 Something Generic 
MouseMouse Pad
Genius Netscroll 120 $4 Mousepad from CD-R King 
  hide details  
Reply
post #5 of 13

Check that power is being supplied from the wall receptacle. If you know for certain that you have electric power going to the PC power supply, check that the switch on the PS is on. Next you will need to check that the ON/OFF switch for your PC case is connected to the MB. If everything is good up to this point, you have a dead short somewhere. Most common issue here is a dead fan. Sometimes it can be HDD, MB, or GPU.

Try disconnecting Case fans from the PS. If it still doesn't turn on, I would disconnect the PS completely and jump start the PS alone.

Try this

post #6 of 13
Thread Starter 
It turns out the PSU burned out from the PC being on all day, I fixed the PSU by opening it up and replacing the Power Thermistor from an old power supply I had. Problem Solved . Thank you john for the power supply tester video
post #7 of 13
Power thermistor?

I know about NTC thermistors (for current inrush limiting), but when they fail you usually get a pretty spectacular fireworks show, like so: http://www1.picturepush.com/photo/a/...x/IMG-0591.jpg (though it rarely causes damage downstream, unless the sparks set something on fire). Then there are sometimes thermistors for fan control. But there aren't really many other thermistors in a PSU. What exactly are you talking about?

And if a PSU burns out from the system being on all day then there's a problem.
Edited by Phaedrus2129 - 2/6/11 at 5:28pm
post #8 of 13
well ,,,, i would not called that fixed. i know cash is hard but i think a new power will do you good. better then buying a new pc.
Dyslexia
(16 items)
 
  
Reply
Dyslexia
(16 items)
 
  
Reply
post #9 of 13
Thread Starter 
Well, me and brother both have the same Power supply same model. When I meant by power thermistor I meant the NTC thermistor yes. Only the top part of it burned out. It only happened because from the PC being on so long which won't be a problem again.
post #10 of 13
Quote:
Originally Posted by aquatech565 View Post
Well, me and brother both have the same Power supply same model. When I meant by power thermistor I meant the NTC thermistor yes. Only the top part of it burned out. It only happened because from the PC being on so long which won't be a problem again.
and that's why you don't buy Raidmax folks.... lol
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Power Supplies
Overclock.net › Forums › Components › Power Supplies › Computer will not turn on.