Overclock.net › Forums › Intel › Intel Motherboards › Everytime clear CMOS otherwise doesn't power up (ASUS P8P67 EVO)
New Posts  All Forums:Forum Nav:

Everytime clear CMOS otherwise doesn't power up (ASUS P8P67 EVO)

post #1 of 5
Thread Starter 
I guess this is not my month as i'll probably RMA the 3rd component (in 2 diferent systems) that seems it's gone south but before i do this let's talk about it...

My ASUS P8P67 EVO (owned for 16 months without probs and with exceptional OC performance/stability, including the 2600K running stable anywhere between 3.4Ghz and 5Ghz) started to behave a month ago...

See sig for full description of the system ("The Mofo")

Sometimes i would press the power on button (either the mobo's power button or the case's, doesn't matter, same results) and the only thing that would change is thart the motherboard's reset button would remain lit. No fan spin (not even half a turn, this is NOT a classic cold boot issue) no nothing...

At the begining, switching off the PSU for a minute or two and on again seemed to solve the problem, no clear CMOS needed. Now no matter what i do (even if i leave the PSU off for hours) i need to press the clear CMOS button (located at the back panel of the mobo) to start it up. If both the reset and power mobo leds remain lit (and the pc hasn't powered up) then the only solution is to clear CMOS and the system power ups properly by itself.

The phenomenon seems to be random, spent lots of hours yesterday, could not find a pattern.

These two videos are part of a 25 minute video recording just to capture this phenomenon (needed about 6-10 power ons/shutdowns).

http://www.youtube.com/watch?feature=player_embedded&v=5x1daaH5T3Y
http://www.youtube.com/watch?feature=player_embedded&v=6gX_ItOYCKQ

Things i have already tried and don't help:
1)New mobo battery (the old was still good measured minimum 3.29V)
2)Leaving the psu off for several minutes
3)Updating the existing 2xxx firmware several times, then clear CMOS and battery disconnected for 15 mins
4)Updating to the latest firmware 3xxx several times, then clear CMOS and battery disconnected for 15 mins
5)Frequency is unrelated to the issue. No matter if it's at 3.4 or 5Ghz at some point the prob will appear. Mind that if it finally power ups (and go in bios to set it up) the mobo remains stable as day 1 under extreme full load (did 20 loop Linx AVX sessions at 3.4, 4.7 and 5Ghz, no problems at all)
6)Fulled around with several bios settings including the infamous "Power On by PCI-E", even if F5 load optimals, the problem will reappear...


I don't have an extra PSU handy but at this point i would seriously doubt it's not the mobo...

If you have any ideas, shoot...

Thanks in advance.
post #2 of 5
did you update the bios, if possible, could you roll back to a previous driver which was stable.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by huzzug View Post

did you update the bios, if possible, could you roll back to a previous driver which was stable.

Like i wrote (#4 and #5), it's not bios related issue, i think i have pretty well eliminate it by udating several times my beloved 2103 and also updating to the latest firmware available (4 times, successfully every time).
post #4 of 5
Thread Starter 
OK, a friend of mine will lend me a psu just to eliminate that my Corsair AX850 doesn't "behave" (to be honest, if the culprit is the AX850 my bet would go to the +5VSB).

If the phenomenon stays then i'll leave the cpu,vga and one stick of ram installed and troubleshoot.

After that i'll just RMA the mobo, nothing else to do or try really...

I'll post back...
post #5 of 5
Thread Starter 
Never mind, has been RMA'd...that mobo is toasted...
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel Motherboards
Overclock.net › Forums › Intel › Intel Motherboards › Everytime clear CMOS otherwise doesn't power up (ASUS P8P67 EVO)