Windows 7: MS wireless keyboard not responding to keystrokes/wireless mouse works

MS Wireless Comfort Keyboard/mouse combination, Model 1.0A -1045 is malfunctioning in the operation of the keyboard. The mouse is working, so my thought is that the receiver is okay. The keyboard stopped working today. I replaced the batteries, reset the button on the bottom of the keyboard and the button on the receiver, ensuring the proper sequencing. Still no joy. Removed all of the screws on the bottom of the keyboard, carefully checked the membrane inside, ensuring cleanliness before re-installing. Still no joy. I visited the MS support website. Unable to locate my brand. Thinking that downloading a new driver might help, i checked my settings for device drivers in My Computer. All drivers seem to be okay according to My Computer>Devices>Keyboard. Searched a couple of other forums and found that others have experienced the same problem. I've misplaced the software that came with the set-up. MS support website no help in trying to find software for this particular model. Any ideas from you Win7 gurus? Many thanks in advance.

Have you run Windows Updates and see if it offers a new driver.
The keyboard is very old. Just might be time for a new one. You could also go to Device Manager and select update driver for the keyboard.

I have 6 or 7 old keyboards. Also gave a few away. I have never wore one out. Just kept buying them looking for one I really liked.
Years later I found one I like.

Bear, thanks for your reply. I was thinking the same thing, so my suspicions have been confirmed. I plugged in an old USB keyboard and it works fine. I am curiouse, tomorrow i'll try my old Compaq Keyboard...yes, i kept it after all of these years. Just want to see if it works. Guess that i'll start searching for a new wireless wonder...thanks for the help!

The keyboard - any keyboard - should work without any special drivers. It will just be seen as a standard keyboard and any special/preprogrammed keys (like media, Office, or browser support keys) will not work.

Remember, keyboards have to work without special drivers or else you could not install Windows in the first place, not to mention enter/edit the BIOS Setup Menu, or use the keyboard in Safe Mode.

Before buying anything, I would start over. Uninstall the driver and then shutdown AND UNPLUG the computer from the wall. This ensures the ATX Form Factor required +5Vsb standby voltages running through the motherboard (and USB connectors) when the computer is simply shut down are totally removed and any setting (perhaps in the dongle too) being held by that standby voltage is released.

Then connect power and fire up and see what happens.

Itaregid, keyboard and mouse both working fine. I unplugged my machine completely, rebooted the next day...all seems well now. Thanks to all for the help.

Great! Thanks for the followup.