Mybook World turns on, but can't read disk

[Deb-B]

The unit has been playing up for a while now, disappearing from the network. I think it may be overheated... anyway, finally it seems to be dead.  The unit still powers up OK, only the drive is not showing up on the network. I have tried to connect it directly via USB and Ethernet to a single computer but still can't read it. What is the best way to know if the actual drive is gone, or to retrieve the data?

[Wizer]

if you have try everything and it;s not working you can get the data by removing the hdd and connecting to a computer

you can run a linux cd like knoppix

removing the drive will void the warranty.. if you are not a linux dude is better to get to some one that knows what is doing