HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 221

Troubleshooting Without Diagnostics Solving Minor Problems (Continued) Problem Cause Cannot remove computer cover or access panel. Smart Cover Lock, featured on some computers, is locked. Poor performance is experienced. Processor is hot. Hard drive is full. Low on memory. Hard drive fragmented. Program previously accessed did not release reserved memory back to the system Virus resident of the hard drive. Too many applications running. Some software applications, especially games, are stressful on the graphics subsystem. Cause unknown. Possible Solution 1. Unlock the Smart Cover Lock using Computer Setup. 2. Use the Smart Cover FailSafe Key in case of forgotten password, power loss, or computer malfunction. 1. Ensure airflow to the computer is not blocked. Leave a 10.2-cm (4-inch) clearance on all vented sides of the computer and above the monitor to permit the required airflow. 2. Ensure the fans are connected and working properly (some fans only operate when needed). 3. Ensure the processor heatsink is installed properly. Transfer data from the hard drive to create more space on the hard drive. Add more memory. Defragment hard drive. Restart the computer. Run virus protection program. 1. Close unnecessary applications. 2. Add more memory. 1. Lower the display resolution for the current application or consult the documentation that came with the application for suggestions on how to improve performance by adjusting parameters in the application. 2. Add more memory. 3. Upgrade the graphics solution. Restart the computer. Service Reference Guide, dc7700 433612-001 D-3