Log in as administrator and run windows troubleshooters to assess and fix any problems: http://windows.microsoft.com/en-us/windows7/products/features/windows-troubleshooting.
I bought an HP HDX16 Notebook PC with 64 bit, dual core 2.13 GHz processor, 4 megs RAM with fingerprint reader and IE8. My problem is similar to trying to catch your right thumb with your right hand when it is encircled with your left thumb and fore finger. No matter how few or how many windows are minimized, when I left click them (or right click and "open"), none will stay open no matter how fast I am. I had M/S engineers working on it but they could only solve the problem by opening up a new user account as the old one had become corrupted somehow. There were no worms or viruses. I fear that it is happening again and I am not pleased with this "work-around" solution. Maybe someone can suggest a cause and cure? It is a lot of work to copy all data from one user to a new one! If anyone can resolve the problem, you may be able to get a ticket to Mumbai!