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PC instantly shutting off, then back on, is this something to worry about?

post #1 of 13
Thread Starter 
To be more clear on the issue, if I unplug the power cord from my PC and make sure all the power is drained from the PSU, then plug it back in, on the first boot everything will turn on for approximately 1 second before shutting back off. 3 seconds later, the PC turns back on and has no issues booting up.

My guess is that some sort of overvoltage protection is being activated when I first turn it on, but why? Any help is appreciated.
post #2 of 13
My ASRock motherboard does that when there's an unstable OC somewhere. It like sets clocks and voltages to default or something if it fails to start 3 times in a row. If you have a similar thing, it may be set to just one failure goes to safe mode.
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post #3 of 13
If you have an Asus Motherboard, it's fairly standard behavior, lots of people report it happening and are worried at first.
If not, I'm not sure if its ok or not. smile.gif
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post #4 of 13
Thread Starter 
Quote:
Originally Posted by TheHorse View Post

My ASRock motherboard does that when there's an unstable OC somewhere. It like sets clocks and voltages to default or something if it fails to start 3 times in a row. If you have a similar thing, it may be set to just one failure goes to safe mode.
I'm not so sure it's a safemode type of deal because both my CPU and RAM Overclocks still work just fine.
Quote:
Originally Posted by spinFX View Post

If you have an Asus Motherboard, it's fairly standard behavior, lots of people report it happening and are worried at first.
If not, I'm not sure if its ok or not. smile.gif
Yep I'm using an ASUS motherboard.
post #5 of 13
Turn off Asus Anti-surge if that does not help then it might be a PSU problem
Asus Anti-surge is a broken mess
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post #6 of 13
Thread Starter 
So far I've tried turning off anti-surge, no change. Removed all overclocks, no change. Tried a different power cord, no change.

I was fairly certain it was a PSU issue to start, as this didn't start happening after upgrading to skylake. Now I just wanna know if I should worry about it or if this could cause issues down the line.
post #7 of 13
Is it the EVGA GS you have under your sig that you have now or another unit?
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post #8 of 13
Quote:
Originally Posted by PsYcHo29388 View Post

To be more clear on the issue, if I unplug the power cord from my PC and make sure all the power is drained from the PSU, then plug it back in, on the first boot everything will turn on for approximately 1 second before shutting back off. 3 seconds later, the PC turns back on and has no issues booting up.

My guess is that some sort of overvoltage protection is being activated when I first turn it on, but why? Any help is appreciated.

My ASUS VI Gene does the same thing, just figured its some quirky ASUS feature. Not really worried about it.
post #9 of 13
Thread Starter 
Quote:
Originally Posted by shilka View Post

Is it the EVGA GS you have under your sig that you have now or another unit?
Yes it is, however as it turns out it is not the PSU. Read below if interested.
Quote:
Originally Posted by Gilles3000 View Post

Quote:
Originally Posted by PsYcHo29388 View Post

To be more clear on the issue, if I unplug the power cord from my PC and make sure all the power is drained from the PSU, then plug it back in, on the first boot everything will turn on for approximately 1 second before shutting back off. 3 seconds later, the PC turns back on and has no issues booting up.

My guess is that some sort of overvoltage protection is being activated when I first turn it on, but why? Any help is appreciated.

My ASUS VI Gene does the same thing, just figured its some quirky ASUS feature. Not really worried about it.
Thank you for the feedback, as it lead me in the right path. After loading up the optimized defaults in the BIOS, the PC booted up without issue after losing power. Since I had so many settings changed previously, it was very time consuming to change each setting one at a time and test it, but eventually I found the culprit: CPU SVID Support



This setting has three options: Disabled, Enabled, and Auto. I had this on disabled. Both Enabled and Auto did not exhibit the same behavior as Disabled after AC power loss. The only reason I set it to disabled is because ASUS told me it was better for overclocking redface.gif guess this will teach me to not take advice from ASUS in the future.

+rep all around, thanks for the help everyone.
post #10 of 13
Did you just buy it? in which case are you aware that its not all that great?
Its not bad or anything like that.
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Seravee
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Intel Core I7 6850K Gigabyte X99 Ultra Gaming EVGA GTX 1080 FTW2 Kingston HyperX DDR4 Savage 3000 MHz 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Evo WD Green WD60EZRX  WD Red WD80EFZX 8TB  Seagate Ironwolf Pro 10 TB 
Optical DriveCoolingCoolingOS
LG CH12NS30 x5 Noctua NF-A14 FLX Noctua NH-D15S Windows 7 64 Bit 
MonitorMonitorKeyboardPower
Asus PG279Q LG 49UH750V 4K LED TV Corsair Gaming Strafe RGB EVGA SuperNova G2 750 watt 
CaseMouseMouse PadAudio
Phanteks Enthoo Luxe Roccat Kone EMP Roccat Sense Metor Sennheiser HD 598 
AudioAudioAudioAudio
Onkyo TX NR646  Dali Opticon Vokal x2 Dali Opticon 2 x2 Dali Opticon 1 
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Dali E12 F Subwoofer CableMod E series PSU cable set CableMod LED Strips 
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