There is an app. If i open up a specific file with it, Windows 7 actually locks up. I can't Ctrl+Alt+Del and I could only move my mouse. Nothing is clickable. Nothing can be done. It reminds me of the Windows 98 days.
I don't suppose I can find out why it happens? Maybe someone already knows a way or two that causes Windows 7 to lock up?
As a programmer I am interested in how this could happen.