HP dx2310 manual Num Lock key

		Troubleshooting Without Diagnostics
Problem	Cause	Solution
Computer date and time	RTC (real-time clock)	First, reset the Date and Time
display is incorrect.	battery may need to be	Properties in the Control Panel
	replaced.	(Computer Setup can also be used to
	✎ MConnecting the	update the RTC date and time). If the
		problem persists, replace the RTC
	computer to a live
	AC outlet prolongs	battery. See the Hardware Reference
	the life of the	Guide on the Library CD for
	RTC battery.	instructions on installing a new
		battery.
Cursor will not move	The Num Lock key	Press the Num Lock key. The
using the arrow keys on	may be on.	Num Lock light should not be on if you
the keypad.		want to use the arrow keys. The Num
		Lock key can be disabled (or
		enabled) in Computer Setup.
Poor performance is	Processor is hot.	1. Ensure airflow to the computer is
experienced.		not blocked. Leave a 4-inch (10.2-
		cm) clearance on all vented sides
		of the computer and monitor to
		permit required airflow.
		2. Ensure fans are connected and
		working properly (some fans only
		operate when needed).
		3. Ensure the processor heatsink is
		installed properly.
Poor performance is	Hard drive is full.	Transfer data from the hard drive to
experienced (continued).		create more space on the hard drive.
	Low on memory.	Add more memory.
	Hard drive is fragmented.	Defragment hard drive.
	Program previously	Restart the computer.
	accessed did not release
	reserved memory back to
	the system.
	Virus resident on the hard	Run the virus protection program.
	drive.
	Too many applications	1. Close unnecessary applications to
	running.	free up memory.
		2. Add more memory.

Service Reference Guide 490778-001 D–3