DDR RAM won't work!

[noktekniq]

can't get ram to work properly.

can't work with slots:
dimm 1 & dimm 3
dimm 2 & dimm 4
dimm 3 & dimm 4

works fine at stock but not when oc:
dimm 1 (one stick of ram)
dimm 1 & dimm 2 (2 sticks)
dimm 2 (one stick of ram)

it's soo weird. after removing the ihs it wont' seem to work. but i'm sure that i didn't damage anything on the chip or scratch any of the capacitors because if i did why would it work with "dimm 1 & dimm 2 (2 sticks)". i think something is up with my dfi motherboard. but i'm not sure what is wrong. doesn't any one have similar issues? let me know.

thigns i have done:
clear cmos.
long cmos clear (8 Hr)




note: the ram ran stable ibefore