Double click not working on drives.

This problem is because of the effect of virus which is very easy to fix. A file named autorun.inf might be created in the root directory of each drives. Deleting those files will fix the problem. Follow the steps below.

1. Type cmd in Run window.
2. If the drive is not C, type C: in command prompt
3. Type cd\ to move to the root directory
4. Type "attrib -r -h -s autorun.inf"
5. Type "del autorun.inf"
6. Move to next drive by typing D:
7. Repeat the above steps(4 to 6) for all the drives.
8. Restart the system.