'Chkdsk cannot run because the volume is in use by another process. Would you like to shcedule this volume to be checked next time the system restarts? (Y/N)' -> i typed 'Y' and it shows : "This volume will be checked the next time the system restarts. C:\Windoes\system32>_" the i restart and it back to the black screen which said it checking the file system on C: But the problem is it didnt do the checking, after it said 'Window will now check the disk' it said this : "Cannot open volume for direct access. Autochk cannot run due to an error caused by a recently installed software package. Use the system restore feauture from the control panel to restore the system to a point prior to the recent software package installation.