now is this 1*4GB DDR2 or 2*2GB DDR2, because your board supports max 8GB over 4 slots, or MAX 2GB per slot. If you put 1 in, it may boot, but it won't read properly and you will have problems.
Do you have any special knowledge of the onboard graphics card memory map layout or how to reconfigure the onboard graphics and audio so that they do not clash with memory above 2GB?
My bix is 2 sticks, 2GB per stick or total of 4GB in A! & B1 slots, to replace 2 sticks of 1GB per stick. Onboard graphics card seems to clash. Screen is all white with blue stripes. Sound is just whines & clicks..
When I go back to 2GB, its A-OK.