drive "Access is denied" message?

drive "Access is denied" message?
start>Run=type("CMD" without " ") enter.

follow these

1. go to C:\ by typing C:\>cd c:\
2. type C:\>attrib -S -H -R autorun.inf
3. delete the file by typing C:\>del autorun.inf
4. goto drive D: by typing C:\>d:
5. repeat step 1,2 and 3
6. do the same in all your drives (say you have C,D,E,F).
7. Close the DOS command window
8. Open task manager and "end task" the explorer.exe in the processes tab
9. From Application Tab in taskManager, select "new Task" button, type "explorer.exe"