Samsung Epic Hangs

[panku_etc]

Hello Friends
I have Samsung Galaxy Epic 4G.
It hangs once connected to PC through USB, screen doesn't work and PC does not shows my mobile.
I have0 re installed USB driver also.
Kindly help me
Thank You

 

[daehttub]

I'd try a different USB cable for starters. What make/model of PC and operating system are you using? Are you connecting directly to the PC or are you using a USB hub? 1.0? 2.0? 3.0? So many variables here.