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12-12-2012, 06:39 PM #1
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Help! Low +12V, On-Off Restart Issues
Was just browsing a while ago when my PC suddenly restarts. To my surprise it went back on and nothing displays on screen. Checked the inside of my RIG to see the fans connected to the motherboard not working and I guess the entire motherboard is not working as well. Then it was restarting after a few second interval
What's going on!?!?!
This might be helpful
the +12V section reads 7.08V only.. X_______X
Is that normal or significantly low???
I don't remember that being like that.
Please help!
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12-12-2012, 08:52 PM #2
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If the 12v is below 11.6v the system will not boot. Either the OS is not picking up the correct information from the BIOS and reporting incorrect information, or the BIOS is picking up incorrect information to begin with.
Since the system just restarted out of nowhere, check the RAM first. Run Memtest86+ for a few passes and see if it reports any errors. If yes, then you have either bad RAM or a bad memory controller. More than likely a bad RAM though.
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12-13-2012, 12:53 AM #3
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I can't.. it's doing it again.. I installed a backup generic PSU and it booted but restarted and doing it again
it could be the mobo? I'm confused... if only my new PSU arrive I could really troubleshoot this properly now im stuck using my laptop
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12-13-2012, 01:00 AM #4
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did you check weather your mobo is shorting out somewhere, try running your system with mobo outside the case
Originally Posted by najiro
I can't.. it's doing it again.. I installed a backup generic PSU and it booted but restarted and doing it again it could be the mobo? I'm confused... if only my new PSU arrive I could really troubleshoot this properly now im stuck using my laptopSetup:#1 Intel i7 2600k @ 4.7 GHz, Mobo: ASUS P8P67 Deluxe B3, Memory: Gskill Ripjaws 2133 2x4GB
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12-13-2012, 01:22 AM #5
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Nope it was inside, a typical setup. THe mobo is around 5 months old, PSU 10 months. This is all of a sudden.. Originally Posted by foxmobouser
I still think it's the mobo.. I was getting a video of it but I just can't watch it turn on and off, restart like crazy with only a few seconds interval. I think it's not powering the entire mobo fully coz I don't see anything on the screen but the fans and cooler is running.WordPress Website Builder - PC Hardware Enthusiast - Content Writer - Economist - Foodie
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12-13-2012, 01:47 AM #6
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I would pull out a multimeter and check the voltages of the PSU. If the initial PSU was going bad it could have take the motherboard down with it since your "generic PSU" exhibits the same rebooting symptoms.
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