sync problem

[sledge]

I have a htc tytnII, a genuine xp and vista. I never had problems with sync but since last week my htc refused to sync with my computers. I searched and installed activesunc and windows mobile sync....nothing

today I tried the bluetooth, and it worked, but the usb cable doesn't work. I tried a new cable, without result. I changed the connection 'usb', didn't work.

problem is, my computer at work doesn't have bt, so I can't sync at work.

anyone an idea what causes the problem ?