Chkdsk is refusing to run in a CMD window or from the Windows dir. It throws up an error about elevated privileges. Choosing run as Admin has no effect. I changed owner and ticked full privileges but it still wont run. This also happens in 8.1 (works O.K in 7). This is the first time I've tried to run chkdsk in 8/10, anyone else have this problem? Anyone have any Ideas? P.S. It's not just the C: drive, it's any drive.