GA-H67A-UD3H-B3 stuck in boot loop.

[jh1521]

To make a long story short, here is the crux of my problem. I have the motherboard listed in the title. It had worked fine for a year, then one day it wouldn't power up anymore, at all. Dead. Gigabyte took it back, and sent me a replacement - exact same model.

The replacement motherboard, out of the box, does not boot. I have connected it in a minimal configuration (CPU, between 1 and 4 sticks of memory, power supply, keyboard/mouse, and using either the integrated video in the SB CPU or a known good video card). The system powers up, I get the splash screen on the monitor but absolutely no response to the keyboard (tried several keyboards) then after 5-10 seconds the system powers down and restarts. Repeats this to infinity -left it rebooting for over an hour with no change.

I have tried getting support from GGTS, but after 3 days still no answer from them. Here is below my exact post there.

I have just received this motherboard from you (RMA number removed). The previous motherboard (same model) had stopped powering up. The RMA department has sent me a replacement motherboard, serial number as above (SN removed). The new motherboard I have received does not boot. When connected in a minimal configuration (motherboard, CPU, CPU heatsink/fan, 1-2 memory modules, keyboard and power supply only, using the built-in video chip of the Sandy Bridge CPU) it powers up, beeps once, shows the splash screen, then reboots after approx. 10 seconds. It does not respond to any key presses, including the ones listed on the splash screen (Tab=post screen, Del=bios setup, F9=xpress recovery 2, F12=boot options, End=Qflash).

The keyboard is in working condition and tested on another system. I tried first a USB keyboard (Logitech K520) then a classic PS/2 keyboard, with the same lack of results.

Other things I have tried:
1. changing the number of memory modules: same result with 1, 2 or 4 memory modules in the system
2. a different power supply. Same result
3. Using a discrete video card for video output. When a video card is inserted into any PCI-express slot, there is no video output from weither the built-in video or from the add-on card. This was tested with 6 different video cards, all known good (Nvidia GTX560, GT9600, ATI/AMD radeon 5850, 5870, 6850, 7970).
4. Clearing the CMOS. I have removed the button cell and left it out for 30 minutes, with the clear cmos jumpers shorted and the motherboard disconnected from the power supply. Then I put the battery back and reconnected the PS.

None of the steps above has had any effect. The motherboard still goes through 10-second cycles of power-on/power-off, and does not respond to the keyboard.

Please advise.


-------------------------------------------------------------------------------
Model Name : GA-H67A-UD3H-B3(rev. 1.1)
--------------------------
M/B Rev : 1.1
BIOS Ver : n/a-cannot check due to the problem below
Serial No. : SN removed
Purchase Dealer : newegg
-------------------------------------------------------------------------------
VGA Brand : Sandy Bridge built-in Model :
CPU Brand : Intel Model : i7-2600k Speed : 3.4
Operation System : none SP :
Memory Brand : Corsair Type : ddr3
Memory Size : 4-16GB Speed : default
Power Supply : 620 W

I wonder if I can find any support here, because frankly I am starting to get impatient. I have been without a working computer for over 3 weeks now, and now I can't even get a reply.

[Hyper530]

Suspect the PSU is faulty, please check the PSU and make sure it was faulty or not

[jh1521]

Suspect the PSU is faulty, please check the PSU and make sure it was faulty or not

The PSU works extremely well with another motherboard. I have another PSU, also known good, 550W, which gives the same result of continuous boot loop. If you read my message carefully, it's mentioned there.

[jh1521]

Still nothing.

[wazza300]

try a longer cmos clear,leave mb battery out overnight

if you get time try and test outside your case on cardboard/wooden surface to eliminate any possible shorting ect

[jh1521]

try a longer cmos clear,leave mb battery out overnight

if you get time try and test outside your case on cardboard/wooden surface to eliminate any possible shorting ect

Been there, done that. Both suggestions. No result. Still boot loop.

[Hyper530]

Which BIOS version on your MB? Make sure the BIOS is up to date. Did you OC the system? If yes try stock settings.

[wazza300]

if youve done all that and its still looping then rma it for a second time!!!