please help BB 8320 cant power on
 

please help....I've got the problem with my BB 8320...can't power on....but if i conect to the usb first without battery then the red light is on...so i put the battery to the phone...that phone is normal...but if I remove the battery then i put in againt that phone can't start on....so I must do conect usb first agait..Somebody can help my problem???

Thanks before