Gigabyte P67A-UD4-B3 Rev1.1 Motherboard loops on startup

[sbp]

No luck at all, I did exactly word for word what Runner asked me to do and the same thing happens. All I get is a quick flash of LEDS from the Phase LEDS and also the PSU and Cpu cooler fan start up and then 1 second later, it all stops and thats it. If I keep pressing the power switch on the case (with a few seconds pause in between each press) I can get it to start it up all again and then stop as previously done.

[nijel]

That's what happen to my UD7 the other day after I left it with power disconnected and battery removed overnight. Was able to start it again only after disconnecting the 24-pin ATX connector and force start the PSU shorting green and black pins. Plug it back in and board started OK.

[sbp]

That's what happen to my UD7 the other day after I left it with power disconnected and battery removed overnight. Was able to start it again only after disconnecting the 24-pin ATX connector and force start the PSU shorting green and black pins. Plug it back in and board started OK.

Firstly I take out the battery and leave it out overnight.


Then in the morning, all I do is make a paperclip into a U shape and put 1 pin into the green and the other end I put into ANY black point? and then plug the PSU into the mains and turn it on? for how long? then turn it off and try to start it again?

[nijel]

Disconnect the 24-pin ATX from the motherboard and then short green and any black pins starting the PSU only for some seconds just to make sure it starts. Then plug the 24-pin ATX back in and try to start the system with the power button.

[sbp]

I tried it with the arctic freezer cooler, but the same thing happens, I think it is the motherboard and I need an RMA.

[Dark Mantis]

I think you might well be right and after what has happened it is hard to pin down the fault exacty. I would suggest contacting your retailer for an RMA.

[rdru]

I have the same problem with 2 p67a-ud4 computers.

my setup:
i7-2600k
corsair vengeance CMZ16GX3M4A1600C9
Corsair CWCH60
Corsair CMPSU-750HX (and 650HX on the other)

One of the computers have ran well for a couple days and them stopped ....

What have you done after all ...

thanks,

rdru

[Dark Mantis]

Hi

I would recommend the first thing to do is to clear the CMOS properly. Please follow these instructions exactly.


Remove the power cable from the mains supply and then press the power switch on the case for a few seconds just to drain any residual energy in the PSU capacitors.

Once done remove the motherboard battery for at least one hour before replacing it.
 
Next plug back into the mains supply and boot.
 
You will now need to enter the BIOS by pressing DEL and load Optimised BIOS Defaults.

Make any other changes to the BIOS settings to suit your self like disabling the floppy drive, disabling the full screen logo and making the HDD the primary boot device and then press F10 to save and exit.

[rdru]

I did extensive tests and no result what so ever.
I'll detail all the steps done so far:

– I have 2 P67a-ud4-b3 flashed to F4.  Common parts:
   i7-2600k
   Sapphire HD6790
   Corsair Vengeance 16GB (4x4GB) 1600
   Corsair H60
   Corsair 650HX/750HX
   CM Storm Sniper
   Hitachi 0F12115 2TB Sata 6GB
   
– Both have booted and run for several days while we did stress tests on the disks
   We used only 4GB of RAM for the tests.
   FW and drivers were updated to the latest on both PCs before the disk tests.

– After a weekend where both remained shutdown, they both presented the looping boot problem.

Things I've tried so far:

– 1 and 2 RAM in all possible combinations (with 4 different RAM modules).  I also tested the
   RAM modules on other computer and they are OK.
– did all the sugested procedures regarding battery, clear CMOS, draing capacitors, clip test for
   the PS, etc.
   Even switched the battery with a new i5-2500 P67A-ud3-b3 (that is working).
– switched the Graphics card for Sapphire HD5570.
– let the boot loop repeat for over 20 times.
– reinserted all MB cables.
– switched the disk SATA cables and connectors and disks.

During the loop, all MB leds light up briefly, all fans (Case, cooler and Graphic cards) turn on.

Reading this thread (and on other sites) and considering all the tests made, I think the problem is not:
– PS (energy related issues)
– RAM
– Graphics card
– Processor and its connection to the MB.
   I used Artic Silver5 and both PCs run for several days
– Disk and its connections

The culprits can be the Corsair H60 or the MB.

I have not seen any complaints on the Corsair forums, and by exclusion, the MB may be condemned …

Can you help me short out this issue? 

What was the outcome of the other users that had the same problems?

Thanks in advance,

rdru

[Dark Mantis]

Please don't take this the wrong way but I feel that there is a lot of assumption in your post. I think that you really need to start from scratch with just one machine at a time. If you are willing to do this then I would suggest as a start:

The next thing is to remove the motherboard from the case and test it on the workbench.

Make sure that you observe anti-static precautions.

Lay some cardboard or use the motherboard box that is non-conductive on the worktop and remove the motherboard/CPU/heatsink/fan/buzzer/one stick of memory and PSU from the case and put it on the cardboard. Add the keyboard and now I know you haven't got any graphics but try and boot. The system should try and then fail emitting a series of beeps. Please post what sounds it makes.

If that boots successfully then add the GPU and reboot.