Lenovo ThinkServer RD440 (English) User Guide and Hardware Maintenance Manual - Page 220

Keyboard, mouse, and USB device problems Follow the suggested actions for the corresponding symptom in the order in which they are listed until the problem is solved. If none of these actions solve the problem, see "Troubleshooting procedure" on page 203 for the subsequent steps you should check after using the information in this topic. Symptom All or some keys on the keyboard do not work. The mouse or pointing device does not work. A USB device does not work. Action 1. Ensure that: • The USB keyboard cable is securely connected to a USB connector on the server. If the USB keyboard is connected to a USB hub, disconnect the keyboard from the hub and connect it directly to the server. • No keys are stuck. • The USB controller is enabled in the Setup Utility program. See "Using the Setup Utility program" on page 63. 2. Restart the server. 3. Replace the keyboard. 1. Ensure that: • The mouse or pointing device cable is securely connected to the server. If the USB mouse or pointing device is connected to a USB hub, disconnect the mouse or pointing device from the hub and connect it directly to the server. • The mouse or pointing device is clean and no dust accumulates. • The device drivers are installed correctly. • The USB controller is enabled in the Setup Utility program. See "Using the Setup Utility program" on page 63. 2. Restart the server. 3. Replace the mouse or pointing device. 1. Ensure that: • The USB cable is securely connected to the server. If the USB device is connected to a USB hub, disconnect the device from the hub and connect it directly to the server. • The device drivers are installed correctly. • The USB controller is enabled in the Setup Utility program. See "Using the Setup Utility program" on page 63. 2. Restart the server. 3. Replace the USB device. 208 ThinkServer RD440 User Guide and Hardware Maintenance Manual