Will not stay connected via USB

[peepeesea]

i searched around and i cant find the thread on this.

i was charging my phone through the USB port and it just randomly disconnected. i reconnected at it is recognized for a second then disconnects. the menu comes up on the screen and i see the notification at the top, but after about 2 seconds it just acts like i unplugged it

i have tried multiple USB ports, cables and different PC's and they all do the same thing now.

i installed HTC sync and rebooted the machine. i changed the power settings on the machine and made sure that the USB power management is disabled.

does any one have3 any idea whats going on?