I was having the same problem on Windows 7 and thought it might be a software issue. But then I found an online manual for the Kensington 72214 and got the solution. You need to make sure to establish a wireless connection between the mouse and the USB receiver by first pressing the connect button on the end of the USB stick and then pressing the connect button on the bottom of the mouse. It is not simultaneous - do step one then two. This also has to be done any time your replace the batteries. Here is the manual: http://files.acco.com/KENSINGTON/K72214/K72214-4697.pdf
Probably the device driver is not detecting. unplug it and connect it to a different USB port and try. if that doesn't work assuming you are using winXP, then go to device manager check to see if there is any exclamation mark next to the mouse. If so then uninstall the driver and hit refresh. that would auto install the driver. if that doesn't solve the problem, then you probably change the mouse. it got defective.
Answers & Comments
I was having the same problem on Windows 7 and thought it might be a software issue. But then I found an online manual for the Kensington 72214 and got the solution.
You need to make sure to establish a wireless connection between the mouse and the USB receiver by first pressing the connect button on the end of the USB stick and then pressing the connect button on the bottom of the mouse. It is not simultaneous - do step one then two. This also has to be done any time your replace the batteries.
Here is the manual: http://files.acco.com/KENSINGTON/K72214/K72214-4697.pdf
Probably the device driver is not detecting. unplug it and connect it to a different USB port and try. if that doesn't work assuming you are using winXP, then go to device manager check to see if there is any exclamation mark next to the mouse. If so then uninstall the driver and hit refresh. that would auto install the driver. if that doesn't solve the problem, then you probably change the mouse. it got defective.