The assumption here is that the keyboard and mouse "have" been installed previously and are not working now. I know that "ass"ume is a four letter word but it had to be said.
1. Check the batteries and make sure that they're ok. If only one of them is weak, replace "BOTH" of them.
2. Re-synch the devices with the transmitter foillowing the instructions in the manual.
3. If you think that the drivers have been corrupted, go to "device manager" and update the drivers.
4. You should be able to download all of the data that was on the installation CD from the Logitech" site.
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Try to Update your driver may it will work for you here are the easiest step for updating the drivers:
On Desktop Right click on My computer icon and select Properties Click on Device Manager (Or follow Start button --> Control Panel --> Device Manager)
Now search for your hardware whom you want to update. Right click on it and click on Update Driver Software...
It will ask for CD or DVD then insert the driver CD/DVD if you don't have then it will ask for searching the drivers over internet click Yes for it and it will automatically download the drivers for you.
Or you can use Third party software which can search,Download and Update them for you without making much effort.
Ensure the drivers for your keyboard and mouse have been installed. If you installed them, then restart your computer and see if they start to work. If you have not installed the driver, and a CD came with them, then place the CD in the drive and run the setup program to install them. If it did not come with a CD, then Windows might not have found working drivers, or failed to install them. In this case, you need to go to Logitech's support site to find the software for your keyboard and mouse. You can reach the website at the following address. Good luck!
Do a Hard Reset method to clear the keyboard and mouse settings and reconnect it back to your computer:
• Remove the batteries from the keyboard • Press the Connect button on the receiver for 10 seconds. • Press the Connect button on the mouse. (You might need a pencil tip or other small tip to press the connect button.) • Insert the batteries back into the keyboard. • Press the Connect button on the receiver. • Press the Connect button on the keyboard.
Hope this helps
Your keyboard should have some type of button on the bottom that "resets" it. Your keyboard has bounced to a new channel that is not recognized by the reciever. I kept having this problem so now I use a wireless mouse but, a corded keyboard.
This might help and might not. Check in system to see what devices you have on the same usb hub. The more things on the same hub the less power that goes to the transceiver for the mouse and the keyboard. Ideally if you can just connect the one thing to the one usb hub and try to leave it alone from there. Hope this helps.
Do a Hard Reset method to clear the keyboard and mouse settings and
reconnect it back to your computer:
• Remove the
batteries from the keyboard • Press the Connect button on the
receiver for 10 seconds. • Press the Connect button on the mouse.
(You might need a pencil tip or other small tip to press the connect
button.) • Insert the batteries back into the keyboard. •
Press the Connect button on the receiver. • Press the Connect
button on the keyboard.