SOURCE: lost signal on Microsoft 4000 wireless keyboard & mouse
you have a resset onder the mousse, change the battery , and reinstall the driver
SOURCE: For 2 years years I have a Microsoft Desktop
Goo0dness, Had this myself just last week. Fortunately I had the old keyboard and mouse and plugged it in to get access. I deleted the wireless keyboard from device manager. rebooted the machine, quickly changed the mouse and keyboard back to the wireless one and it all came back on. saved me buying a new one. Hope this works for you.
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if its a wireless mouse and keyboard make sure the batteries are securely seated and fully charged the battery panel should be on the underside of your mouse keyboard as would be the on off switch
click start control panel keyboard hardware make sure the right type of keyboard is selected
click start control panel keyboard hardware troubleshoot or click start control panel administration tools computer management device manager scroll to keyboard you could see a yellow question/exclamation mark ? ! or red X a new driver will need to be installed
right click to install drivers
http://download.cnet.com/bluetooth-driver-ver-5/3000-2110_4-149801.html
hope this help
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Have you used a USB keyboard and mouse to completely uninstall the MS Wireless duo and re-intall them yet?
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