HP Desktop Pro A G2 Micro Maintenance and Service Guide - Page 56
Troubleshooting without diagnostics, Control Panel
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Computer date and time display is incorrect. Cause Solution RTC (real-time clock) battery may need to be replaced. NOTE: Connecting the computer to a live AC outlet prolongs the life of the RTC battery. Reset the date and time under Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Removal and Replacement section for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement. To access Control Panel in Windows 10, type control panel in the taskbar search box, and then select Control Panel. There is no sound or sound volume is too low. Cause System volume may be set low or muted. Solution 1. Check the Computer Setup settings to make sure the internal system speaker is not muted (this setting does not affect the external speakers). 2. Make sure the external speakers are properly connected and powered on and that the speakers' volume control is set correctly. 3. Use the system volume control available in the operating system to make sure the speakers are not muted or to increase the volume. Cannot remove computer cover or access panel. Cause Smart Cover Lock, featured on some computers, is locked. Solution Unlock the Smart Cover Lock using Computer Setup. In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store. Poor performance. Cause Processor is too hot. Hard drive is full. Low on memory. Hard drive fragmented. 48 Chapter 5 Troubleshooting without diagnostics Solution 1. Make sure airflow to the computer is not blocked. Leave a 10.2 cm (4 in) clearance on all vented sides of the computer and above the monitor to permit the required airflow. 2. Make sure fans are connected and working properly (some fans only operate when needed). 3. Make sure the processor fan sink is installed properly. Transfer data from the hard drive to create more space on the hard drive. Add more memory. Defragment hard drive.