Often this is simply because the radio link between the receiver and the mouse/keyboard has been broken. Some possible reasons for this are: flat batteries, insertion of new batteries, connector to the computer removed, etc. In the first instance, you should restore the Logitech devices to a defined status (reset). To reset the device: Remove the batteries from the mouse/keyboard for approximately ½ hour. Press
and hold the "Connect" button on the receiver for 15-20 seconds. Make
sure that the receiver is connected, the PC is switched on and that
there are no batteries in the devices. After resetting, insert new
batteries and restore the connection as follows:
Press and hold the "Connect" button on the receiver for 1-2 seconds.
immediately press the "Connect" button on the bottom of the mouse
(locate this button before you start, all cordless mice have a
Move the mouse around to check that the connection is working correctly
Press and hold the "Connect" button on the receiver again for 1-2 seconds.
immediately press the "Connect" button on the bottom of the keyboard
(locate this button before you start, all cordless keyboards have a
Use the keyboard to check that the connection is working correctly
Both devices should now be working correctly
one or both of these devices is still not working, try them on another
compatible PC system to ensure that the fault does not lie with your PC
One solution given was to remove the batteries (if you had to replace them) then keep rattling upon the keyboard until all the capicitors are empty, (just ratlle for 2 / 3 minutes) then reinsert the batteries and try again if you can connect.
If you remove the batteries the capicitors are still loaded and this sometimes can cause detection problems when renewed batteries or it can cause the "Battery low" message not being reset.
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It seems that your laptop keyboard is not working any more. you need to buy new keyboard for ur laptop or if you want to use usb keyboard then remove this keyboard's cable, connect your usb keyboard it will work.
Disconnect all devices except keyboard and mouse and master cd or DVD. unplug then hit power button. Plug back in. Hit power and hopefully you get to BIOS. If you do make sure you save the BIOS before you leave to start OS. Keep me informed and I'll keep checking your listing to see if its working or not.
have you tried downloading a newer driver for your computer? you might have to find drivers for both the mouse and your key board. make sure your numlocks is on for the keyboard to work, and make sure that in your control panel under hardware and sound check their for your mouse connections.
A few days ago my acer laptop aspire 1640z , began to behave slower than usual when typing on the keyboard. At first I thought it was a virus, I did all the necessary scans and found none. I then thought it might be the Keyboard driver, but it wasn’t. I went into safe mode by keeping F8 down when you start the computer and select the directory service restore mode, which resets certain applications back to its original state. I found that my internet AOL connection and explore and fire fox would not connect to the net. Make sure you have a disk for AOL or setup file for fire fox saved, to reinstall the software. This seemed to work a bit but by accident, I remove the battery from my laptop and kept the power cord connect and Wow! it works even faster than before. I have also notice that my battery does not hold a charge anymore. My theory is that because the battery is in critical status when connected to laptop…. (Even though the power cord is connected), the computer thinks that its going to run out of power and wants to go into hibernation mode which slows everything down including typing on the keyboard. So before you try the safe mode option, remove the battery and use only the power cord cable and see if this solves the problem. Mine is running fine again ,but when I put battery back it slows down again. I read on the net its affecting only Acer Laptops, probably because the way the power settings software is set up for the Acers.
Ok, try this. Remove the batteries from the keyboard, just type anything randomly for about a minute on the k/b keys (doesnt have to make sense) Just press as many keys as you can. This will discharge the capacitors and reset the k/b. Reinsert the batteries, making sure they are in the correct alignment (try to use new batteries if you can) and connect to reciever. Press the connect button on receiver first, and then press the connect button under the keyboard.
If that still doesn't work, then your keyboard is most likely defective. Make sure you have reinstalled the k/b software first from Logitech..
Press the Receiver button (and the lights will start
Then if the Keyboard isn't working, press the small RESET/CONNECT
button on the back of the board to connect the keyboard to the
If the MOUSE isn’t working, push the small RESET/CONNECT button
on the back of the mouse to connect to the receiver. Then they
should work okay. Hope this helps. Bud
Solution. My wireles keyboard stopped working except for the F-Lock key, the Media key and the sleep key. It wasn't batteries, even though I tried, communication was there because the above keys were working. Remove the batteries from your keyboard and let it sit for about 10 minutes. Press the red connect button a few times and other various keys every few minutes during that time. This may be the whole "capacitor discharge" trick, but I tired that with someone elses instructions and my keyboard did not work after 2 minutes of key pressing. I think it just needed more time to clear out the secure settings. Good luck, I was about to trash this keyboard until I tried again