Need Suggestion

[prtuc2]

I took out my pc apart to do some cleaning yesterday, however today when I put everything back inside the case my motherboard doesn't post with 2 sticks of ram.

PC:
Q9650
Gigabyte P45 UD3P Rev1.1
Mushkin Ascent DDR2-1066 ram

No parts were added to the existing pc, after a few hours troubleshooting I can say both ram sticks are in working conditions. I can't boot with ram sticks in DIMM slot 3 and 4, haven't tried DIMM slot 2, but right now using it on DIMM slot 1 for operation.

I did tried clear CMOS, tweaking the BIOS setting for the ram. Any help will be greatly appreciate, thanks for reading.

 

[Kenmitch]

Aren't you supposed to be using Dimm1 and Dimm3 together? Been quite some time that I've played around with a S775 system but I'm thinking it's the way it was.

 

[prtuc2]

Yes, I had it at DIMM slot 1 & 3 before the cleaning it boot fine. A week past I got the RMA ram, but still no go the same problem. Only can boot from DIMM slot 1 or 2 with 1 stick, slot 3 & 4 no go.