Right here is the situation, just bought myself 4GB of new DDR2 memory to finally replace my measly 2GB I have currently. I installed the memory simply enough but when I powered the machine on there was no display on the monitor. I figured I must have knocked the graphics card but after fiddling with that and trying a spare card I had around I still had no luck at all. As a last effort I tried putting my old memory sticks back in and the PC worked fine.

So my question is how is new memory affecting my display?

Some extra PC info:

Mobo - ASUSTeK Computer INC. Model P5N32-E SLI PLUS (Socket 775)
Current RAM - 2048MB DDR2 400MHz DRAM Frequency (Speccy doesn't give much info on RAM)
New RAM - 2x2GB PC2-8500 DDR2 1066MHz CL5-7-7-25 DIMM (straight off of the stick!)
GFX Card - GeForce GTX 550 Ti