i just rooted my mobile! i ve downloaded from the market rom manager then i ve tried to back up with rom manager and the phone shut down!!!now when i turn it on it stuck on the initial start up lg black screen permanently.i I need to take off the battery in order to shut it down!!!!besides when i plug in usb it does not recognize the computer that the phone is pluged althought i have the usb driver installed already.How can i restore my phone??Did i brick it??Help please!!!!