Bought a Magic Mouse just after Christmas and it recently ran out of batteries. So I just left it for a while as I forgot to get some new batteries and tried to replace them and fire it up today; but it just didn't work. Didn't turn on, nothing. I've tried entering my serial number on the request a repair bit on the apple website but it wont accept my serial number for some reason, shall I just ring them? Anyone had these issues before? thanks.