amd athlon II x4 630 help :(

hey all, I recently purchased an Amd Athlon 630 X4. When I installed it, I tried to boot into windows but it just wouldn't work. It would get up to starting windows and would just do nothing.

things I have done:
Updated BIOS
Reinstalled OS with my dual core in then installed my quad core
Ive played around with the voltages in the BIOS but still no luck
Although I tried under clocking it by changing the multiplier in the BIOS from 14 to 12
and then reduced the voltage by 0.050. And that's the only time it boots up, and even then its not stable when I stress test it.
I tried updating my BIOS again using Q flash, for the first time I successfully managed to boot into windows with all the default settings, but as soon as I restarted the same problem but with a quick BSOD I couldn't read and then the PC restarting again. When I put my dual core everything works fine.

System specs

My dual core is an AMD athlon 64 X2 5000+
4gb ddr2 - 2 dell sticks and 2 zeppalin
Ati radeon 4870
GA mA770 ud3- rev 2.0
OCZ stealxstream 600w
Windows 7 - 64bit :)

Guys I will really appreciate your help :) Thanks.

Which revision of the motherboard is it? 2.1/2.0 or 1.0? They all pretty much support the same CPU's, but the 1.0 has a different bios than the 2.0/2.1.

its rev 2.0
and yes, I checked the CPU support list before buying (ovbiously) and it does support it.

All three revisions of the board (2.1, 2.0 and 1.0), support the x4 630 in both steppings (C2 and C3) it is available in,

GIGABYTE - Motherboard - Socket AM2+ - GA-MA770-UD3 (rev. 2.1)

GIGABYTE - Motherboard - Socket AM2+ - GA-MA770-UD3 (rev. 2.0)

GIGABYTE - Motherboard - Socket AM2+ - GA-MA770-UD3 (rev. 1.0)

All three support DDR2, with the biggest difference between the 1.0 and the 2.0/2.1 is the 1.0 has the 770/SB700 chipset where the 2.0/2.1 both have the 770/SB710 chipset. You can see the differences between the South Bridges here,

AMD 700 chipset series - Wikipedia, the free encyclopedia

you would probably have to ask Gigabyte to find out what other differences there are between the different revisions beyond that.

Along as the boards have at least the following bios,

1.0 - F8
2.0 - FD
2.1 - FG

then it should just be a matter of dropping it in and go.

cogman one quick question, in all the things you listed doing, did you remember to reset the bios (clear CMOS) when switching the CPU's?

I must have resetted the CMOS like 20 times whilst trying to fix this damn thing lol, and the BIOS version I have now is the latest (FKb) and I have tried all the others aswell
Thanks

Any other idea's?

One thing comes to mind looking at a picture of your motherboard,



and the specs for your power supply,

OCZ 600W StealthXStream Power Supply OCZ Technology

Do you have both 4 pin (2x2) 12V connectors plugged in where circled?

yes I do

You list 4 GB of ram with I assume 2 different sets (and not all 4 sticks different), if that is the case try it with only one set installed. It could be that the memory controller in the new CPU is disagreeing with the mixed memory.

I have tried removing 1 set of the same out ( the dell ones) and left the 2gb of zeppalin in the slot. Still no luck