1,  Press CTRL + ALT + DEL

2,  If you have a setup where that doesn't automatically open Task Manager - then click on Task Manager

3,  Click on the Processes tab

4,  Look for "explorer.exe"

5,  If it's there then right click it and select "End Process Tree" if not then skip that step

6,  Click on File

7,  Click on New task (run)

8,  In the dialogue box type explorer.exe

9,  Click OK

10,  That should bring up the desktop icons and taskbar if so then reboot and skip Step #11 (next one)

11,  If it doesn't bring up the desktop or icons repeat Steps 6 through 7 only type %SystemRoot%\System32\restore\rstrui.exe

12,  Restore to an earlier point