Usb Not Recongnized please help

hello there.i have a problem with the issue usb not recognized and a white screen with error 507(means reload OS).I tried loading OS but when it comes wait for device initialization it fails and it says reconnecting to jvm.while reconnecting my phone boots up and a error 507 and the computer didnt recognized my phone.i tried BBSAK and JL_Cmder and CrackUtil noting responded...................................please help my bold 9000 to go back to home screen....PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE!!!!!!!!!!!!!!!!!!!!!!:(