System boot issues

[bxstatic]

Motherboard: Asus M3N72-D
cpu: amd phenom II X4 920
psu: corsair tx850w
gpu: evga nvidia gtx 260
ram: ocz 2x2gb (ocz2p10664gk)
os: windows xp

Hey guys i've been having a problem with this old computer, the thing is that under a few circumstances it will not post. What i have found is that i cannot have both of the ram sticks plugged in at the same time no matter the configuration, but i have tested each ram individually and the computer boots fine, but only if they are in slot 1 or 4 (1 is closest to the cpu) if it is in the second or third slot the system does not post. The other problem is that if i connect a fan to a specific fan header on the motherboard the system will not post. That means i only have the cpu fan header and a fan header by southbridge, if i connect a fan to the fan header by the ram slots the system does not post. All of my fans are connected directly to the psu. If you guys could give me a few pointers as to what seems to be the problem that would be awsome. I don't want to replace the whole system yet as i have yet to save enough money for that. Thanks

 

[fantomet]

have you reseted your motherboard with the jumper? have you tried having the RAM's in slot 1 and 3?

 

[bxstatic]

have you reseted your motherboard with the jumper? have you tried having the RAM's in slot 1 and 3?

yea i tried every config with the ram, sorry what do you mean by reseting the motherboard with a jumper

 

[bxstatic]

nvm lol that actually did it after i reset the cmos i can use both ram sticks again with no problem havent checked the fan header issue but ill check that out soon thanks a bunch

 

[fantomet]

No problem, glad it worked out
Merry christmas and happy new year