I deleted some files through task manager that I thought were interfering with my installations. When I started my computer this afternoon, the screen remained black. It did allow me into the Start Menu, however, and I did a system restore. After the system restore, the desktop remains black excecpt for the task bar. I can use the computer now, but I don't want the black screen on the desktop. Changing the display didn't help me either. Can you help me?