Gigabyte ud3 P55 won't post

I get rapid, non-stop short beeps when I try to post. I've run through the usual and advanced gamut of TS steps, and have positively confirmed that the only possible hardware damage could be on the MB. What makes me think otherwise is that this seems to be a common issue to this board or platform. Here's another forum link w/exactly the same problem. they seem to be having a similar or same issue.

http://episteme.arstechnica.com/ev [...] 2005141041

Normally I'd bunk this as a bad board, but now I'm not so sure....
Any help or suggestions would be appreciated!

With all due respect, your post is totally self-contradictory. And its not possible to give any useful advice without you taking the time to tell us what "TS" steps you have taken.

OTOH, if you "have positively confirmed the only possible hardware damage could be on the mobo" . . . what question are you asking?

Thanks for clarifying.

Have you tried booting up with nothing but the cpu? And if you're using a UPS, bypass it for now. You should get the "no memory" beeps. If not, you're down to psu or mobo or cpu/mobo, no?

Forgot to add that I'm hesitant to suspect the psu as it's a brand new corsair 750w. Like w/PC P&C, I've simply never had a bad PSU from them. Not saying it's impossible. Just unlikely.

Well, I caved and went to the local fry's to get another motherboard.....same problem. And this is after they tested the first on and told me they couldn't get it to boot w/their hardware. So unless there is a major incompatibility problem right now, it has to either be the i5 or the Corsair....I'll know tomorrow when I have time to gut my system and steal it's PSU for a test.

If you get it to work - please report back as to culprit.

(1) look on newegg review, 15 w/no DOA's (UD3R), one with a pci-e problem.
(2) 2 in-a-row doa's. Please test your PSU. While the Corsairs are very good, it is possible one slipped thru and is killing your MB. This is ONLY a possibility, but would explain 2 DOA's in a row. If Plugging in a 2nd PSU does not "fix" it (Good possibility) I would not try a 3rd with the Corsair PSU unless you KNOW it is good.

You are describing a power electrical bomb. If a power supply die, it usually protect the whole system. When you think about the ones of Corsair, their protections are really some of the best.

By the way, don't trust reviews like that. My 965P-DS3 was supposed to be a hell of a board... great reviews and anything else... it was honestly the biggest piece of garbage I have ever purchased. 3 different revision died on the same computer at stock speed with great quality components. My Asus P5QL Pro board lasted for more time than the 3 gigabytes together and it is still running fine with the same hardware.

Well, here's the run-down.

I went back to fry's, and had them swap out a lot of hardware. At first nothing worked, and they even had the same issue on another brand new board and i7. At some point, we got a random CMOS checksum error, and it started to boot after that with 1 stick of fry's cheap DDR3 RAM @ 1.5v in the 2nd slot (white, closest to CPU). From that point afterwards, we were able to add sticks to the 4th slot, and then the other two (blue) last. Now it will post with all the slot populated. Now I know full well how touchy some boards can be about how the DIMMs are populated; but before this it wouldn't POST with 1 stick in ANY slot....just those rapid beeps.

Not sure what happened here, as the first board definitely wouldn't post or even spin up, so I know that for sure was a bad board.

As of now, the system is booting with 2x1gb G.skill DDR3 1600s (1.65v). I'm at the end of my tether tonight, so I'll be putting windows 7 on it tomorrow night. We'll see if it's still working properly by then.

I have a sneaking suspicion that until they tried posting the board with one stick of RAM that runs @ stock 1.5v, it messed with the BIOS maybe, trying to boot w/those G.Skills @ 1.65v first? I'm grasping at straws, but unless the board came with a jacked BIOS, then I can't think of anything else it could be.

It doesn't explain the rapid-fire beeping, esp. since I still get that w/no ram...what happened to the old school memory-issue post beeps? Like the one they say to look for in the new manual even, the ones we should be getting?

Eitherway, thanks for the help and input from everyone here on trying to solve this wacked problem. I'll keep this thread updated and let you know how the system checks out as I complete this build.

Specs:

Core i5 750
GB P55-UD3R
2x1Gb G. Skill DDR3 1600 (prefer OCZ, but they were out of stock, or way overpriced)
XFX 4890 1Gb
Corsair 750w
CM Storm Scout (fantastic case BTW)
The usual junk for the peripherals and drives. Nothing special there.
Win7, if I can get this copy to install right this time!

Thanks for the update, I'm glad it wasn't the PS
Have you checked if you have the latest BIOS Fireware.

For what it's worth I was having the same problem - machine gun fire system beeps. No POST.

I basically had the Utility build from TechReport, so same mobo, cpu, ram, etc as op.

1. I took both sticks out - still machine gunning
2. Put 1 stick in the far left slot - still machine gunning
3. Moved the stick to the 2nd from the left slot - Gives a CMOS Error, boots.
4. Powered down and slid the 2nd stick in the far right slot - Boots fine Windows 7 installing now.


So all I ended up doing was moving the ram form the blue slots to the white slots. Maybe DIMM1 is jacked up for me and maybe GB is having a bad track record with the DIMM Slots on these boards but this is how I got mine working. I can confirm that I didn't play with any parts other than ram to solve this problem so it's not CPU/GPU/PSU etc.

HTH

Thank you very much! I had the exact same problem and solution!

Attila