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Random POST freezing and BIOS corruption

post #1 of 4
Thread Starter 
Hello,

I've been having issues with my motherboard lately. The issues first appeared about two weeks ago when I turned on my computer in the morning. It's the same rig as in the sig.

  • Black screen on boot, no POST
  • Same stuff after rebooting
  • Unpowered the PSU and let it sit there for a while
  • Now it boots and POST appears
  • "EC or EC flash might be corrupted, Contact Asus techincal support"
  • Reset the BIOS with a switch in the MoBo
  • Everything works fine


I was a bit worried about why it happened but couldn't figure it out. The previous night I had only turned on "Power on with PCI" for Wake-On-Lan operation and disabled "USB3 battery charging support". But two weeks after that I got some more weird problems which seemed quite similar.

  • Black screen on boot, no POST
  • After reboot it hangs at full screen ASUS logo
  • Unpowered the PSU and let it sit there for a while
  • Now it boots and works fine


Before this latest issue I had done nothing in the BIOS recently, but I did reinstall Windows the day before.

Is my motherboard failing on me? Might these issues be related to my OC? My computer had been running manual 1.30 voltages for over an year but I switched to offset voltage about a month ago. I had used manual voltage because that way I the voltage didn't bounce around at all and I could get it stable at lower voltages than with offset. With offset voltage it bounces around 1.33-1.34 V under load with LLC at 75%.

I have no idea if that change in the OC has anything to do with this or if there's something wrong with my BIOS, MoBo or other hardware. The problems are so random that I can't reproduce it manually. I don't know how to start troubleshooting. Thanks for any tips in advance.
post #2 of 4
First off, to do a BIOS reset you also have to unplug the PSU from the wall outlet.

Bad BIOS battery?
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
post #3 of 4
Thread Starter 
Quote:
Originally Posted by billbartuska View Post

First off, to do a BIOS reset you also have to unplug the PSU from the wall outlet.

Bad BIOS battery?

Hmm, I only switched off the PSU switch and then reset the BIOS and it seemed to have worked.

Good idea, I should probably replace the battery first and see if it happens again.
post #4 of 4
The latest power supply specification (ATX12V) calls for power supplies to power the BIOS chip even when the PSU is switched off. So, you can't do a reset with the power supply connected to the house mains.
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
  hide details  
Reply
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