Jump to content
Corsair Community

PC Keeps Restarting Before POST or Boot Screens


Recommended Posts

Went to turn on my PC after work today and it keeps restarting after 2 seconds. My LCD screen is just black and shows nothing. Not even the POST or Gigabyte screen shows up like how it should after pressing the power button during a normal startup. The restarts are an infinite loop, so after a few times I just powered down. My PC was working perfectly fine last nite before I went to bed. I have not installed any new software or hardware in a few weeks, so I'm thinking it must be a PSU or motherboard issue.


Anyone know what could be a possible cause? Is my Corsair HX520 failing?


I have checked all the cables and re-sat the RAM and video card with no luck. Also tried to clear the CMOS, but that didn't help either.



EDIT -- Removed all non-essential hardware connected to the PSU and motherboard except 1 RAM and video card. Same issue still persists. My system turns on for 2 seconds, turns off for 2 seconds, turns on for 2 seconds, turns off for 2 seconds in a continous loop of that sequence. At least the failure is consistant. My monitor is completely black, so I cannot even get the system to run long enough to run memtest or get into BIOS.

Link to comment
Share on other sites

  • Corsair Employees
I would recommend that you try this basic PSU functionality test. If the PSU powers on and stays on, then there is a possibility that your system is triggering the OCP/OVP (overcurrent and overvoltage protection) circuits on the PSU due to an out of spec signal from the motherboard. There could also be a short or a grounding issue within the system preventing the PSU from powering on and staying on. If this is the case then I would recommend testing the PSU in a different system to be sure. If the PSU is still not powering on properly then let us know and we will be happy to replace it!
Link to comment
Share on other sites


This topic is now archived and is closed to further replies.

  • Create New...