I have installed lots of apps and now market place is not starting. I have turned my phone off and then on. I get an htc splash screen and also black background screen with outline of wp7. When I connect to pc, zune tries to find a past restore point. After sometime, wp7 loops between htc screen and connects to pc screen. I want to know that how do you create a restore point for wp7 using zune? Any suggestion would be highly appreciated. Thank you in advance.