Go!Temp used to work, but now is not recognized by computer.

How are your Go!Temps stored? It is possible to damage a Go!Temp by winding the cable around the handle of the device. If the cord is wound tightly, it can pull the wires out of the strain relief and cause the Go!Temp to malfunction.

See also:
TIL 2377: How should I store the cord of my sensor?