[anandk]

let it run once completely.

then try this :
run regedit
Edit: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Session Manager
Change the BootExecute entry from:
autocheck autochk * /.........
To:
autocheck autochk *

or else try this :
Start> Run> bring up a command prompt by typing in "CMD" and type " fsutil dirty query g: ". This queries the drive, and more than likely it will tell you that it is dirty. Next, type "CHKNTFS /X G:". The X tells Windows to NOT check that particular drive (G) on the next reboot. At this time, manually reboot your computer, it should not do a Chkdsk and take you directly to Windows.

Once Windows has fully loaded, bring up another CMD prompt and type and now you want to do a Chkdsk manually by typing "Chkdsk /f /r g:". This should take you through 5 stages of the scan and will unset that dirty bit. Finally, type "fsutil dirty query g:" and Windows will confirm that the dirty bit is not set on that drive.