Q: Should I bother with dskchk?

ok, so I have the bsod for unmountable_boot_volume (windows 7), and following some advice i read online decided to use the chkdsk command to try and see if I could fix it before needing to reinstall windows. Figured this would be the easier route, though I wouldn't mind reinstalling as that would allow me to upgrade the Mac OS, as I have read many complications happen to the Windows partition upon upgrading. So, it has been nearly 24 hours, and I have gone through approx 45000 of 255000 files on stage 4. If it keeps at this rate, would I be better off just reinstalling windows? I have a full backup, so not worried about losing anything. Guess wondering if this is just more work than it's worth. Thx for advice!