Windows Media Player sync with Sony Ericsson device

I’m using Windows Vista 32bit laptop with Windows Media Player 11. Earlier I was able to Sync my Sony Ericsson K750i mobile with WMP but it stopped syncing now automatically. I dint made any changes to my system in this period. My mobile is recognized without any problems in Windows, I can see it in My Computer as removal device and also browse it contents in Mass Storage but it is not visible in sync tab in WMP.

I tried connecting in different ports, restarted computer, restarted mobile, etc but nothing works. Any suggestions please?

Probably it could be because of incorrect drivers. Have you installed Sony Ericsson K750i drivers on your PC? No matter it was working fine, many drivers stop working after a specific period of time. So install or better update Sony drivers again. Once done, restart the system and try connecting again. It should sync fine. Also make sure that you haven’t disabled the sync in WMP. You can check it under Advanced Tab in Sync Tab in WMP.