cannot connect my phone via MTP
i have an xperia U phone and recently the phone won't connect to the computer when it's ON (the phone)
(1) in the device manager shows that there is an MTP device connected and in my computer shows a hidden removable disk
when i tried to uninstall and then reinstall the driver it took a minute and then it installed correctly but it was the same as (1) above
although the phone shows that it's charging.
but it works well when i mount it in CWM , so i really don't want to flash again or do wipes i want to know where the problem is &
why isn't there a mass storage like in the CWM when the phone is on??
and does wiping \system do any thing wrong?? i mean before restoring a backup??