Dell OEM Ready Optiplex 760 Service Manual - Page 174

l Reseat the memory modules (see Memory) to ensure that your computer is successfully communicating with the memory. l Ensure that you are following the memory installation guidelines (see Installing Memory Module (s)). l Ensure that the memory you are using is supported by your computer. For more information about the type of memory supported by your computer, see Memory. l Run the Dell Diagnostics (see Dell Diagnostics). Mouse Problems WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance. Check the mouse cable - l Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any bent pins. l Remove any mouse extension cables, and connect the mouse directly to the computer. l Verify that the mouse cable is connected as shown on the setup diagram for your computer. Restart the computer - 1. Simultaneously press to display the Start menu. 2. Press , press the up- and down-arrow keys to highlight Shut down or Turn Off, and then press . 3. After the computer turns off, reconnect the mouse cable as shown on the setup diagram. 4. Turn on the computer. Test the mouse - Connect a properly working mouse to the computer, then try using the mouse. Check the mouse settings - Windows XP 1. Click Start® Control Panel® Mouse. 2. Adjust the settings as needed. Windows Vista: 1. Click Start ® Control Panel® Hardware and Sound® Mouse. 2. Adjust the settings as needed. Reinstall the mouse driver Run the Hardware Troubleshooter - See Hardware Troubleshooter. Network Problems WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance. Check the network cable connector - Ensure that the network cable is firmly inserted into the network connector on the back of the computer and the network jack. Check the network lights on the back of the computer - If the link integrity light is off, no network communication is occurring. Replace the network cable. Restart the computer and log on to the network again Check your network settings - Contact your network administrator or the person who set up your network to verify that your network settings are correct and that the network is functioning. Run the Hardware Troubleshooter - See Hardware Troubleshooter.