HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 131
Solving network problems
UPC - 883585271085
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Table 5-12 Hardware installation problems (continued) Problem Cause Solution Power LED flashes Red five times, Memory is installed incorrectly 1. once every second, followed by a or is bad. two second pause, and the 2. workstation beeps five times. Reseat DIMMs. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Power LED flashes Red six times, once every second, followed by a two second pause, and the workstation beeps six times. Video card is not seated properly or is bad, or system board is bad. For systems with a graphics card: 1. Reseat the graphics card. 2. Replace the graphics card. 3. Replace the system board. Solving network problems These guidelines do not discuss the process of debugging the network cabling. Table 5-13 Network problems Problem Cause Solution Wake-on-LAN feature is not functioning. Wake-on-LAN is not enabled. Use the Network control application to enable Wake-onLAN. Network driver does not detect network controller. Network controller is disabled. Incorrect network driver. Network status link light does not No active network is detected. turn on or it never flashes. Run Computer Setup and enable network controller. Check the network controller documentation for the correct driver, or obtain the latest driver from the manufacturer's website. Check cabling and network equipment for proper connection. The network status light should flash when there is network activity. Network controller is not set up properly. Use the network control application to verify that the device is working properly. Network driver is not properly loaded. Reinstall network drivers. System cannot auto-sense the network. Disable auto-sensing capabilities and force the system into the correct operating mode. Diagnostics reports a failure. The cable is not securely connected. Be sure that both ends of the data cable are securely connected. The cable is attached to the incorrect connector. Be sure that the cable is attached to the correct connector. There is a problem with the cable Be sure that the cable and device at the other end are or a device at the other end of the operating correctly. cable. Network controller interrupt is Under the Computer Setup Advanced menu, change the shared with an expansion board. resource settings for the board. ENWW Troubleshooting scenarios and solutions 121