hey dude i had the same problem. After booting up all the applications were not responding. So i started uninstalling the application one by one. A fresh copy of window 7 will not hand or not give such commands. It gives only when u install the software which is not compatible with win7. My problem was same and its because of my sony ericsson pc suite which is not compatible. But when i install it, it was installed properly. Later i installed kaspersky. problem started. If i remove kaspersky it works fine fine fine..... the same way if i uninstall sony ericsson pc suite it works really very fine. Kaspersky is good and compatible with win7 and pc suit is not compatible and it creates some problem in pc. But Kaspersky will try to prevent those problems and they might getting clash there and win7 gets hanged. That the reason. Suggestion is try to remove the software which is not compatible. Better you remove software one by one.
I SOLVED MY PROBLEM..... REALLY NOW ITS WORKING FINE FINE FINE......... try this......