Compaq Presario SR1000 PC Troubleshooting Guide - Page 19

Keyboard and Mouse (continued ) Symptom Possible cause Optical mouse does not track cursor well. The optical sensor uses the pattern of the surface to track the position of the cursor. Reflective surfaces, grooved surfaces, glass, or other see-through surfaces inhibit the ability of the sensor to track the cursor. Mouse sensor is dirty. Mouse cursor moves too fast. The wireless mouse moves the cursor more quickly than a standard mouse. Solution Place the mouse on a mouse pad or white sheet of paper. Wipe the light sensor lens on the bottom of the mouse with a lint-free cloth (not paper). Adjust the mouse speed in Windows. Power Symptom PC will not turn on or start. Possible cause PC is not securely connected to an external power source. Green power supply light on back of PC is out. Monitor is not connected or is not on. Line voltage selection switch is not in the proper position for your country/region (115V /230V ). Wall outlet is defective. Wrong memory modules were used in an upgrade, or memory modules were installed in the wrong location. Hard disk drive is damaged. After an upgrade or repair, the drive power, data, or power supply cables may not be properly connected. Solution Ensure that cables connecting the PC to the external power source are plugged in properly. When the cables connecting the PC to the external power source are plugged in properly and the wall outlet is functioning, the green power supply light should be on; if the light is not on, refer to the Warranty and Support Guide to contact Support. Connect the monitor to the PC, plug it in, and turn it on. Set the line voltage selection switch to the correct setting for your country/region, or refer to the Warranty and Support Guide to contact Support. Test the outlet by connecting a different electrical device to the outlet. Reinstall the old memory to return your PC to its original state. Refer to the Upgrading and Servicing Guide for instructions. Press the Help ? button on the keyboard to open the Help and Support Center, or refer to the Warranty and Support Guide to contact Support for replacement details. Reseat drive power, data, and power supply cables. See the Upgrading and Servicing Guide for instructions. PC Troubleshooting Guide 15