|Never heard of this issue before. However you could try this:|
Press CTRL+ALT+DELETE and open the Task Manager. In the application TAB click on New Task and then enter the following 1 by 1.
If entering the first one works do not enter the second one. If the first one does not work then enter the second one but the Explorer is already open i.e My Documents. What I think is that the First process is not running i.e. Desktop Windows Manager.
Try And Reply Back.
Tek Ideas Unlimited