Microsoft 3000 mouse doesn't work after changing to new batteries. What to do?

SOURCE: Microsoft Wireless Notebook Optical Mouse 3000 not working

Most devices last a long time. Have you tried re-installing the software for the keyboard & Mouse> Also go to microsoft download center and get the latest drivers for you setup. Make sure when you do, choose the right Operating System driver for your Keyboard & Mouse. Hope this helps. Bud

SOURCE: Microsoft Wireless Notebook Optical Mouse 3000 help

I had the same problem.
Press the button on the underside of the USB, the green light will flash. Now press the reset button on the underside of the mouse. Your mouse should now work.

SOURCE: microsoft optical notebook mouse 3000 battery change

Simply push the silver oval button below the word "Microsoft" and the cover will spring open.

SOURCE: Red light doesn't come on ~ Microsoft optical notebook mouse 3000

Look for a small button that protrudes where the receiver is placed at the bottom of mouse. There are two possibilities for turning on the red light, one is that said button is stuck,if that is the case push it down a couple of times and see if the red light goes on, the other is that the button is broken at it's base. Also check that battery contacts are clean and hold it firmly. Good luck!!! Chawah.

SOURCE: Mouse stopped working (Microsoft optical notebook 3000 mouse)

YOur mouse needs to be paired with the transceiver. THere is normally a button on the part which goes inot the laptop. Press it once then flip the mouse and press its button once. It will then work hopefully :)

Testimonial: "Wow. Thanks. That did the trick. Mouse now working fine. Again, many many thanks. "