The repair process uses the video driver shipped on the install media. But just in case, you can try adding another video card of a different brand and use it during the repair install. Note if you repair Windows you may lose some settings and files, make
sure you backed up the files on the HDD to an external hard disk or DVD before continuing.
If you want to go to the harder path to find the cause of problem which is time-consuming and does not guarantee success, you can collect a boot log by choosing "Enable
Boot Logging" in the F8 boot menu, then boot into your other HDD, find the bllot log file and post the log to Windows Live SkyDrive (so others can see it), then do your own research or ask a question like this in the system repair forum on this web
site.