Help!

Got a sandish sansa m240 since about a year.

When I connect it to the computer, it says “USB Connected MTP” witch is normal.

But nothing happen on my computer.

I try to solve the problem by searching the mp3 player on the device manager (using windowsXP)

The propreties says: "The drivers for this device are not installed. (Code 28)

To reinstall the drivers for this device, click Reinstall Driver."

When I click “Reinstall driver” this message appears: "There was a problem installing the hardware Sandisk Sansa m240. An error occur during the instalation of the device. A service installation section of this INF is invalid.".

I can listen music un my mp3 player witch is working just fine.  But I can’t plug it in my computer to change my music.  Stuck with the same songs since november and going nuts. 

I tried to install the updater for firmware but nothing happen.  Same thing with the Device Recorvery Setup.

When I start it, I can’t seem to find any number on the mp3 screen except “Sandisk m240 1.0GB

Serie number begins my: BB0606