I have a nVidia Card 8400gs, whenever i try to install a new version of forceware for windows xp it shows an error::bang::bang::bang: Please help.
Which forceware version is not installing? You should always, to be on the safe side, consider installing the WHQL drivers that are available on nVidia's website. Btw, this is the link for the latest driver that supports your 8400GS (Win XP): http://www.nvidia.com/object/winxp_175.19_whql.html, (Vista 32) http://www.nvidia.com/object/winvista_x86_175.19_whql.html or (Vista 64) http://www.nvidia.com/object/winvista_x64_175.19_whql.html. In case those are not installing, then you should consider hardware problems (maybe a BIOS upgrade could solve it as well).