Lenovo IdeaCentre B520 Lenovo IdeaCentre B5 Series User Guide - Page 47

3. Turn the wireless keyboard and mouse off and on again. a. Reinstall all batteries. b. Turn on the power switch (if the devices have ON/OFF switches). c. Repair the devices as explained in the "Wireless keyboard and mouse instructions" section in the User Guide. 4. Restart the computer. a. Turn off the computer and unplug the main power cord. b. Plug the main power cord in and restart the computer. c. Repair the devices as explained in the "Wireless keyboard and mouse instructions" section in the User Guide. 5. If either the wireless keyboard or mouse has been connected to the computer, you only need to follow Method 3 to establish a connection for the other device. 6. If you have a wired keyboard and mouse, follow Method 3 to establish the connection. Problem: The wireless keyboard and mouse are not active immediately after the computer starts up or wakes from sleep. Troubleshooting and problem resolution: Some Bluetooth devices may disconnect after no data has been transmitted for a certain amount of time to conserve battery power. If this happens, it may be necessary to press a key on the wireless keyboard or click a button on the mouse once or twice to wake them up. Problem: Keyboard or mouse intermittently stops responding or takes a long time to respond. Troubleshooting and problem resolution: 1. Check for signal interference. Avoid putting metal objects between the device and the computer. Do not place the computer under a metal surface or table. Move cordless phone base stations, microwave ovens, and other 2.4GHz electrical devices away from the computer. Keep wireless devices within 10 meters (33 feet) of the computer. 2. Download the latest version of the device drivers. You can download the latest drivers from the official Lenovo website at http://www.lenovo.com. 42 User Guide