hi/ive just tried to install another graphics card my old 1 geforce2 still works but only just, the new 1 is 3d prophet 2, all i get is 3 bleeps then nothing, i press the power button and it shuts off straight away, it dosn't boot up..i put my old 1 back in to check out the prob over net, thy both ave 64mb and im running on 256 ddr ram 3gb cpu,,,help please, hate looking at bad display.