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Gigabyte EP-45-UD3P wont boot with ram in 3rd or 4th slot

N

neokeelo

Member
I got a

Corsair 650 watt PS
Gigabyte EP-45-UD3P rev 1.1 with F10j Bios
Q9550 (stock)
2x2GB Crucial Ballistix Tracer 800mhz 4-4-4-12 2.0V BL25664AR80A.16FE5

The system will boot fine with a single stick in ram slot 1 or 2 but not slot 3 or 4. If I put one stick of ram in in slot 3 or 4 or 2 sticks in 1-3 or 2-4 (dual channel) I get a long series of fast beeps around 23 I think.

I tried setting the motherboard bios to the ram's default timings and voltages after resetting the cmos with 1 stick in, still no good. I tried two different high end power supplies,two different video cards and triple checked my power and video card connections., still the same. CPU temps are ~29C idle. All voltages are fine.

Any ideas or advice?
 
Last edited:
UD3P manual says continuous short beeps = "Power error"

you say you've set voltages to default values which I assume is 2.0, so my only suggestion is to try higher voltages
 
ram works in slot 1 and 2 together in single channel mode. Dont know whats going on. Im gonna try some more ram Monday when it comes in. If that doesnt work im going to have to RMA it i guess...
 
What could cause the ram to work for months in dual channel for the person I bought it from then when he shipped it here it suddenly would not boot anymore like it was? Could static electricity damage the mb or ram when I was installing it? I never noticed any.
 
Thanks for the link! I guess it is save to run the ram that high? they are rated at 2.0v so 2.2 is not too high? I hope now. I will try it tonight.
 
Thanks for the BIOS link. I was having a similar problem with some GSkills. I finally just swapped them with the 2 sticks I had in my ud3r, and both boards are happy.
 
Had this problem with an old mobo I had, we installed Dual-channel and the thing wouldn't even post, in the shop. Confused the heck outta everyone until we removed one stick... then upgraded the BIOS. Everything worked after that...
 
I have the same problem atm.

I have the same exact board as you neo, 2 sticks of ram I can boot with no problems. 3 sticks I get to post displaying my cpu and then freezing and can't enter bios. 4 sticks = no post and black screen with no noises.

I was running on 2 sticks for awhile because my other 2 sticks were being replaced, due to them burning out.

Also noticing that my post is taking longer then normal and not being able to delete my raid volume without it freezing. To top it off my games started to lockup and sound started looping for 5 seconds before recovering, I couldn't even talk in vent during the lockup.

IMO, I think my board is toast, it worked before I sent my ram back and now it doesn't?!

Things I have tried:
Resetting CMO's.
Testing each stick one at a time with memtest, no errors.
Tested with 2 sticks of old and new, no errors.
Voltages report normal.

Specs:
3.16ghz E8500 stock while troubleshooting
4x1 Sticks of Corsair Dominators
1000w PSU
280GTX
2x Raptors in raid 0
Gigabyte GA-EP45-UD3P rev 1.1
 
I found the problem guys, my old board ( P5Q Pro was using an extra stand off which was pressing in between the 2 and 3rd ram slots on the back of the motherboard. It was short circuiting the board whenever I had ram in slor 3 or 4. This makes sense because that was where it was rubbing against it when I pulled it off. Removed that stand off and it boots up fine. 🙂
 
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