Ok , this is what I see at the command prompt
X:\sources>
so then I type
chkdsk /f
And I get
The type of file is NTFS. Cannot lock the current drive.
Windows cannot run disk checking on this volume because it is write protected
So, then I change the command prompt to C: and type chkdsk /f
And I get
The type of file system is NTFS.
Cannot lock current drive.
Chkdsk cannot run because the volume is in use by another process. Chkdsk may run if this volume is dismounted first.
All opened handles to this volume would then be invalid
Would you like to force a dismount on this volume? (y/n)
What should I do?