I already tried using a windows 7 disk for repair, and I tried the bootrec.exe commands in command prompt as well but they don't work, the automatic repair also does not work. Is there any way to remove grub from bios or wherever it is installed without having to format my entire system?
Boot from windows 7 installation DVD. Select 'Repair' on first screen(the one with Install Now button) and then select your Windows installation and open command prompt from there.
Here you have complete list of commands: http://support.microsoft.com/kb/927392/
Try Pinger's methods If all else fails, go through this article: http://neosmart.net/wiki/display/EBCD/Recovering+the+Windows+Bootloader+from+the+DVD
and choose the Option Three: Nuclear Holocaust.. :P
I was able to fix mine with Option Two though.