Author: Xaltar
Subject: ASRock H81M Boot Issue
Posted: 04 Dec 2016 at 5:53pm
Subject: ASRock H81M Boot Issue
Posted: 04 Dec 2016 at 5:53pm
 ASRockH81M wrote:Alright, CPU fan removed, old thermal paste removed, CPU has been reseated, new thermal paste has been applied and fan is back on. I ran Prime95 burn-in and CPU temps never go above 80C. No beep codes. |
So this resolved the beep issue?
| ASRockH81M wrote: The restart issue seems to be OS-independent at this point. I have cleared the CMOS (pulled the power cord, wait 15seconds, used the CLRCMOS1 jumper for 5 seconds, and powered the computer back on. I then enter the BIOS and Load UEFI defaults and then Save and Exit. After that the computer will hang (I have waited over 10 minutes for the reboot) and then I have to power it down via the power switch (Hold for 4 seconds). Rebooting using Linux or Win10 causes a hang. Once the screen goes black a quick power button push will power the system off - it doesn't require the 4 second hold. Not really sure what state the computer is in at that point to allow that though. |
Great job on the troubleshooting here ![Clap]( "Clap")
You would be surprised how few people even realize the OS could cause issues like this and blame the hardware without so much as a look at the OS. You have saved pages of back and forth with this one paragraph ![Thumbs Up]( "Thumbs Up")
You would be surprised how few people even realize the OS could cause issues like this and blame the hardware without so much as a look at the OS. You have saved pages of back and forth with this one paragraph 
This is clearly not the OS as you have tried both linux and windows with the same issue repeating, that combined with a hang on BIOS exit is irrefutable. The problem is definitely hardware or firmware related (UEFI).
If you have not already, try the following:
Disconnect everything from the board (especially drives) with the exception of CPU, 1 stick of RAM and power. Make sure all you have connected to your IO panel is mouse and keyboard and connect your monitor to the motherboard output. I have seen issues like this be caused by a flash drive or other USB device being connected during post. Then in this configuration see if your problem occurs exiting the UEFI.
Keep us posted.