you could try this
1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace
4. Right-click the registry key that you located in step 3, point to New, and then click Key.
5. Type {645FF040-5081-101B-9F08-00AA002F954E}, and then press ENTER.
6. Click the new {645FF040-5081-101B-9F08-00AA002F954E} key that you created in step 5.
7. In the right pane, double-click the (Default) entry.
8. In the Edit String dialog box, type Recycle Bin in the Value data box, and then click OK.
9. Close Registry Editor.
or you could go to start > run > type cmd > then type chkdsk and let windows find any errors and fix them
hope this helps