Toribash
Haha, I have this mouse, Check if you have the batterys in right, this certain mouse is a little weird, both Positive ends (+) are on the bottom, and both negatives (-) are both on the top.

Also, make sure the switch Isnt broken, you can experiment with the switch on the bottom while the faceplate is off to see how the switch pulls the trigger on the bottom, there should be a bar that slides up and down that pulls the trigger underneath the laser.
well everything is fine except that no computer I have tried can find or discover the mouse T_T
the nano receiver might be broken then :/. do you have any other mice with nano receivers? if so i would try to see if maybe you got them mixed up.
You don't say?
Well the reciever is fine as my computer detects it.
but I don't have another receiver wat do?