I need someone to please help me. I recently upgrade my computer from Windows Vista to Windows 7. Everything seems to start up fine, but then the desktop icons are just blank sheets, the task bar isn't functioning, and when I go to the start menu, I can not click on any of the programs (there is a small magnifying glass that appears next to the program when I click on it). Also whenever I double click on icons on my desktop, the computer becomes non responsive and the computer also stalls. Please Please help me.