I have a relatively new 27" Acer monitor that I'm using with a VGA connection to my Lenovo T420s Laptop running Windows 7. After several uneventful months, all of a sudden all icons disappeared from my desktop (even the Windows icons, such as the taskbar and Start button). All that remains is my wallpaper. The laptop screen is fine, and when I plug in my previous monitor it works perfectly as well. I spent time with Acer, but when it turned out that the monitor worked fine with my other computer, then determined it was a computer issue. I updated my drivers with Lenovo, but that didn't help. Any ideas?