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Hey ,recently i have updated my sony ericsson live with walkman to ics..then i factory resetted it....when i connect it to laptop using usb,phone is getting charged but pc companion did not recognise my mobile..any solution ?????/
Try changing the phone's USB mode and failing that, try rebooting the PC with the phone connected and/or vice-versa.
Thank you Dr_Chris..I have solved it myself...Jus checked in whether ther is any problem with the related drivers in laptop.I reinstalled them.it worked 
Great, glad you solved it!