good night, i have a Galaxy I989 from T-Mobile, this device is not my device, its a device of a friend, i do not know that my friend make it with his cellphone but this device do not turn on, i saw a application for Linux (Ubuntu) that can fix it but this app is for galaxy s device, this device do not turn on but when i connect it to my computer, my laptop make a sound and then my laptop ask me for a device drivers.....what i can do?