[crowdedisland]

I had a BB 9700 connected to a Winxp PC I loaded desktop and device software 5 and everything was working. Now the PC will not see the BB. I plug it in and it does not sync or even notice the device is there in device manger. I checked different usb port, disabeld anti virus and firewall;ll checked cable, etc

[Dubdub]

Try a battery pull on the BB.

Are you connecting to the PC via a HUB? BBs do not like HUBs.