Default [Q] my itel it 1351 is not recognized by my pc because some damaged usb features.

few days ago;i tried to flash a ROM on my android phone ITEL IT 1351; while i was trying to do a backup of my current system ; the phone marked a warning that seems to be damaged! i removed the battery & reinsert it again and restart i saw it is working but some features like usb mass storage when plugged to the computer are not working! is there any help?please anyone knows how to solve? help me.