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Battery life is approximately 3–5 years. First, reset the date and time. If the problem persists, replace the RTC battery. Refer to the Hardware Reference Guide for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement. Computer appears to pause periodically. Network driver is loaded and no network connection is established. Establish a network connection, or use Computer Setup (F10) to disable the network controller. 3–4 getting started guide basic troubleshooting solving general problems (continued) problem 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 (F10). The Smart Cover FailSafe Key, a device for manually disabling the Smart Cover Lock, is available from HP. You will need the FailSafe Key in case of a forgotten password, power loss, or computer malfunction. Poor performance is experienced. Processor is hot. 1. Make sure the airflow to the computer is not blocked. 2. Make sure the fans are connected and working properly (some fans only operate when needed). 3. Make sure the processor heatsink is installed properly. Cursor will not move using the arrow keys on the keypad. 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. Blank monitor screen. Monitor is not turned on and the monitor light is not on. The cable connections are not correct. Computer is in Stand By mode. Turn on the monitor and check that the monitor light is on. Check the monitor cable connection from the monitor to the computer to the appropriate connector, and to the electrical outlet. If you have an AGP card installed, ensure that the monitor is connected to the AGP card. Press the power button to resume from Stand By mode. getting started guide 3–5 basic troubleshooting solving general problems (continued) problem cause solution A A CAUTION: When attempting to resume from Stand By mode, do not hold down the power button for more than four seconds. Otherwise, Stand By mode is lost, and you will lose your data. System ROM is bad; system is running in Failsafe Boot Block mode (indicated by one long beep and three short beeps). Reflash the ROM using a ROMPaq diskette. See the “Failsafe Boot Block ROM” section of the Desktop Management Guide for more information. The energy saver feature has been enabled. Press any key or click the mouse button and, if set, type your password. The RGB (Red, Green, Blue) input switch on the monitor is incorrectly set. Set the monitor’s RGB input switch to 75 ohms and, if there is a sync switch, set it to external. Blank monitor screen. (continued) You are using a fixed-sync monitor and it will not sync at the resolution chosen. Be sure that the monitor can accept the same sweep rate as the resolution chosen. The VGA/BNC selector switch is not properly set. Set the selector switch to agree with the cable connection. 3–6 getting started guide basic troubleshooting solving hardware installation problems You may need to reconfigure the computer when you add or remove hardware, such as an additional diskette drive. solving hardware installation problems problem cause solution A new device is not recognized as part of the system. Cable(s) of new external device are loose or power cables are unplugged. Ensure that all cables are properly and securely connected and that pins in the cable or connector are not bent down. Power switch of new external device is not turned on. Turn off the computer, turn on the external device, then turn on the computer to integrate the device with the computer system. When the system advised you of changes to the configuration, you did not accept them. Reboot the computer and follow the instructions for accepting the changes. getting started guide 3–7 basic troubleshooting diagnostic keyboard LEDs, front panel LEDs, and audible codes The following table describes the keyboard and front panel LED codes as well as the audible codes that may occur during Power On Self Test (POST) that do not necessarily have an error code or text message associated with them. Refer to the Troubleshooting Guide on the Documentation Library CD for more information. NOTE: If your system is equipped with a Universal Serial Bus (USB) keyboard, you may hear the beep sequences for some of the keyboard light error codes, but you may not see the flashing keyboard lights. diagnostic keyboard LEDS, front panel LEDs, and audible codes activity beeps probable cause recommended action Num Lock, 1L, 3S* System ROM is bad; Reflash the ROM using a Caps Lock, and system is running ROMPaq diskette. See the Scroll Lock LEDs in Failsafe Boot “Failsafe Boot Block ROM” flash on and off Block mode. section of the Desktop two times. Management Guide. Flashing Caps 1L, 2S* Graphics controller not 1. Clear CMOS. Lock LED on present or incorrectly 2. If graphics card has been Keyboar...
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