Press the window button on your keyboard and that gets the "START" thing up, and you use up down left right arrows to move around.
Try this, press and hold down Ctrl + Alt and then press Del to bring up Task Manager, then File, New Task and type in explorer.exe to restart the process.
Now if you can get into other peoples areas but not yours, go into their's (assuming they have admin rights?) and do this.. or, if you can, do this on yours without the mous using the keyboard as I explained.. Tab moves the "dots around the button that you could press" to the next one in line, so once you have tabbed to the button you must press, press ENTER. ANother thing...if you must choose an option which involves something along the top...FILE/EDIT etc.. press ALT and the underlined letter
Turn off Simple File Sharing: a. Click Start, and then click My Computer.
b. On the Tools menu, click Folder Options, and then click the View tab.
c. Under Advanced Settings, click to clear the Use simple file sharing (Recommended) check box, and then click OK.
2. Right-click the folder that you want to take ownership of, and then click Properties.
3. Click the Security tab, and then click OK on the Security message, if one appears.
4. Click Advanced, and then click the Owner tab.
5. In the Name list, click your user name, Administrator if you are logged in as Administrator, or click the Administrators group.
If you want to take ownership of the contents of that folder, click to select the Replace owner on subcontainers and objects check box.
6. Click OK.
You may receive the following error message, where Folder is the name of the folder that you want to take ownership of:
You do not have permission to read the contents of directory Folder. Do you want to replace the directory permissions with permissions granting you Full Control? All permissions will be replaced if you press Yes.
7. Click Yes.
8. Click OK, and then reapply the permissions and security settings that you want for the folder and the folder contents.
Good luck.