0x0000007E stop error nvgts.sys error

Alright it all started with my virus protector claiming everything was a virus so i restarted and got a blue screen with the error 0x000000B i managed to fix that with the windows OS repair. I have an eror that says floppy disk error but my computer doesnt even have a floppy disk drive so im not sure whats going on. Now i have another error 0x0000007E and nvgts.sys error. Is the nvtgs.sys something that i have to fix with the original OS disk? I cant get past the windows logo and cant even get it to get to the start up window i tried running it in safe mode and every other mode on F8. Im not sure if i would need to reformat my hard drive and reinstall my OS i bought my computer with everything installed and it game with windows xp service pack 2 and a vista 32 bit disk that said also already installed but my computer ran in windows xp. not sure if thats relevant.