Hi. Ive just bought a new 512Mb memory card and installed it in my PC (in the second DIM slot - next to my original 512Mb). When I start the PC there is nothing on the screen and it just beeps (on and off). If tryed the new memory on its own in the PC and it seems to work fine.. it just won't work with the original card. Is there something Im missing? I read in another thread the PSU could be causing the problem.... any help would be much appreciated...???? Many thanks Paul