Wndows Vista sp1 does not recognize iPhone 4

[Peter Rask]

Vista used to recognize by my iphone, but I suspect an automatic update did something so it will no longer recognize the phone. It is not a problem with the phone because it works on another computer, nor is it a problem with the cable or usb ports as they also work with other devices. The proper driver for iphone is in the proper place and I have turned off the User Account Controls and completely removed itunes, quicktime, Apple support and Apple Mobile Device manager, but vista and itunes simply do not recognize that anything is plugged in. My iPhone works fine on anoher computer. Yesterday I reformated my harddisken and installed Vista again. Same problem nothing haspens when I connect my iPhone to my pc. iPhone not even recognised as a camera. Please help