Thread: for GARMIN expert

hi.....
i have a garmin nuvi 1390 and i make a fatal error that i format it with my computer to put anther software but after i format it ...it dont recognize on my computer also i try to put it on anther computer but it not recognize on the usb so what i can do......known that i put its old software on the memory card but it same problem that when i open it it give me a sceer write on it garmin and nothing else.....