i have a geforce fx 5200 8x agp 128 mb graphic card. it worked fine for me for about an year. but now suddenly only 64 mb of video ram is detected by my system. i checked the 'dxdiag' dialogue box and it also shows only 64 mb of video ram. reinstalling the drivers, the card itself and tweaking different bios settings has not worked for me. what to do? how can this happen? can a part of video card memory just die like this? if not, then what can i do to restore the 'hidden' 64 mb of it? any answers, suggestions etc. will be greatly appreciated. thanks.