Dell OptiPlex 745c (Early 2007) - Manual (Page 96)

Mouse Problems
Network Problems
Fill out the Diagnostics Checklist as you complete these checks.
If you receive an insufficient memory message —
l Save and close any open files and exit any open programs you are not using to see if that resolves the problem.
l See the software documentation for minimum memory requirements. If necessary, install additional memory (see Installing Memory ).
l Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see Memory ).
l Run the Dell Diagnostics (see Dell Diagnostics ).
If you experience other memory problems —
l Reseat the memory modules to ensure that your computer is successfully communicating with the memory (see Installing Memory ).
l Ensure that you are following the memory installation guidelines (see Memory ).
l Run the Dell Diagnostics (see Dell Diagnostics ).
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
Check the mouse cable —
1. Check the cable connector for bent or broken pins and for damaged or frayed cables. Straighten bent pins.
2. Remove mouse extension cables, if used, and connect the mouse directly to the computer.
3. Shut down the computer, reconnect the mouse cable as shown in the Quick Reference Guide for your computer, and then restart the
computer.
Restart the computer —
1. Simultaneously press <Ctrl><Esc> to display the Start menu.
2. Type u, press the keyboard arrow keys to highlight Shut down or Turn Off, and then press <Enter>.
3. After the computer turns off, reconnect the mouse cable as shown on the in the Quick Reference Guide for your computer.
4. Start the computer.
Test the mouse — Connect a properly working mouse to the computer, and try using the mouse. If the new mouse works, the original
mouse is faulty.
Check the mouse settings —
1. Click the Start button, click Control Panel, and then click Printers and Other Hardware.
2. Click Mouse.
3. Try adjusting the settings.
If you are using a PS/2 mouse
1. Enter system setup (see Entering System Setup ) and ensure that the Mouse Port option is set to On.
2. Exit system setup and restart the computer.
Reinstall the mouse driver — See Reinstalling Drivers and Utilities .
Run the Dell Diagnostics — See Dell Diagnostics .
Check for software and hardware conflicts — See Resolving Software and Hardware Incompatibilities .
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.