OP (Corrupt files - chkdsk utility
"Click to open Computer.
Right-click the hard [COLOR=#3676a2! important][COLOR=#3676a2! important]disk [COLOR=#3676a2! important]drive[/COLOR][/COLOR][/COLOR]
that you want to check, and then click
Click the Tools tab, and then, under Error-checking, click Check Now. If
you are prompted for an administrator password or confirmation, type the
password or provide confirmation.
To automatically repair problems with files and folders that the scan
detects, select Automatically fix [COLOR=#3676a2! important][COLOR=#3676a2! important]file [COLOR=#3676a2! important]system[/COLOR][/COLOR][/COLOR]
errors. Otherwise, the disk
check will simply report problems but not fix them.
To perform a thorough disk check, select Scan for and attempt recovery of
bad sectors. This scan attempts to find and repair physical errors on the
hard disk itself, and it can take much longer to complete.
To check for both file errors and physical errors, select both Automatically
fix file system errors and Scan for and attempt recovery of bad sectors.
Depending upon the size of your hard disk, this may take several minutes.
For best results, don't use your computer for any other tasks while it's
checking for errors.
If you select Automatically fix file system errors for a disk that is in use
(for example, the partition that contains Windows), you'll be prompted you to
reschedule the disk check for the next time you restart your computer."
After asking you to reschedule the disk check for the next time you restart your computer, I would save everything your working on and restart your computer. Once you see the disk check start, I would suggest that you get a nice long movie and relax because the disk check can take hours depending on hard drive size. (My 500g external took 4-5 hours.)