com port win7

Hi,
I was wondering can someone help. I am trying to unlock a sony K800i.
Whats happening is when I connect the phone using setool lite everything goes ok until you have to
remove cable and battery and reconnect. It won't reconnect its like win7 or something is holding the
com port open. It won't connect to the phone till I reboot the computer. Anyone?

Try reinstalling your USB drivers.
Greetings

I downloaded SEUS from sony ericsson site and installed it . It fixed the problem phone now unlocked.Thanks.