GA-PH67A-UD3: Immediate Shutdown Before POST

[rscharer]

Hey folks,

I have a new GA-PH67A-UD3 that managed to get past POST once and immediately bluescreened during the Windows boot sequence (IRQL_NOT_LESS_OR_EQUAL).  Now it can't even make it to POST... the case fans whir for about a second and then stop.  I've tried clearing CMOS both with the jumper and with removing the battery and waiting an hour, but it doesn't help... the same thing happens.

All components are known good -- they work fine in an ASUS P8P67LE I was able to borrow.  The motherboard doesn't seem to be grounded, and I've stripped the connections down to the bare essentials -- just RAM, CPU, fans, and power to the same effect.  Can anyone think of anything I haven't tried before I RMA it?  Thanks.

[Dark Mantis]

Hi and welcome to the Gigabyte Forum.

Firstly are you sure that your memory is compatible with your motherboard and working 100% ?

What power supply are you using to run it ?

Can you list all of your hardware by make/model please ?

[rscharer]

Sure... yes, the memory is on the QVL list and would appear to be fine (I've run it in the memtest86+ beta for > 12 hrs).  I've got a SeaSonic S12D 750 PSU, which should be plenty, and an i5-2500k with the stock cooler.  The case is a Lian Li tower that I've been using for about six years or so and whose model number escapes me.  That should be all the relevant hardware, since I've removed everything else to get a clean test.

One maybe interesting thing I've noticed is that although the case fans spin briefly, the CPU fan does not.  The CPU fan is in working order, since it works in the Asus, so maybe there's something wrong with the MB fan header?

[Dark Mantis]

Yes it would be consistant with a CPU overheat scenario. The processor would energise within a second or so get to hot and shut down to save damage and then as it cooled it would restart. It would just continue doing this cycle.

Try putting the fan on a different header if there is one close enough, failing that try connecting it up directly to the PSU with an adapter.

[rscharer]

I'll give it a shot, but the scenario isn't quite as you describe.  It shuts down after a second but won't attempt to restart without manual intervention.  I have to clear CMOS to get it to try again.

[Dark Mantis]

OK well let us know how you get on and if you have no luck we can look for another reason for the problem.