HP dx2400 manual Computer date and time display is incorrect Cause Solution

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.

First, 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 Hardware Reference Guide for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement.

Cursor will not move using the arrow keys on the keypad.

Cause Solution

The Num Lock key may be on.

Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. The Num Lock key can be disabled (or enabled) in Computer Setup.

Poor performance is experienced.

Cause	Solution
Processor is hot.	1. Make sure 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.	Make sure fans are connected and working properly
		(some fans only operate when needed).
	3.	Make sure the processor heatsink is installed properly.
Hard drive is full.	Transfer data from the hard drive to create more space on the
	hard drive.
Low on memory.	Add more memory.
Hard drive fragmented.	Defragment hard drive.
Program previously accessed did not release reserved	Restart the computer.
memory back to the system.
Virus resident on the hard drive.	Run virus protection program.
Too many applications running.	1. Close unnecessary applications to free up memory.
		Some applications run in the background and can be
		closed by right-clicking on their corresponding icons in the
		task tray. To prevent these applications from launching at
		startup, go to Start > Run (Microsoft Windows XP) or
		Start > All Programs > Accessories > Run (Microsoft
		Windows Vista) and type msconfig. On the Startup tab
		of the System Configuration Utility, uncheck applications
		that you do not want to launch automatically.
		CAUTION: Do not prevent applications from launching
		at startup that are required for proper system operation.
	2.	Add more memory.

ENWW Solving General Problems 11