http://www.meegosweden.com/anvaendar...din-nokia-n900

Im using that guide,

I charged my battery in my friends 5800, and it showed full power.

However I can't det the computer to discover the device when I plug it in, I get the usb symbol in the top right corner, however only when I hold down the "u" key and then plug in the usb-kabel.

Do I have any chance of fixing it myself? Or is a service the only option?