HP Workstation x4000 hp workstation x4000 - Technical Reference manual - Windo - Page 206

Troubleshooting Solving Hardware Problems Added a Second Processor If you have added a second processor and the system won't boot: 1. Turn off the display and shut down the Workstation. Disconnect all power cables and any LAN or telecommunications cables. 2. Remove the Workstation's cover. 3. Set system board switch 4 to ON (see "System Board Switches" on page 28). 4. If the system boots, enter the setup program by pressing F2 and go to the advanced menu (see "Advanced Menu" on page 52) to check the processor speed setting. If it is set to Auto, your processors may have different frequencies. This is not supported. Keyboard Doesn't Work If your keyboard does not work as expected: • Ensure that all the keyboard cables are firmly connected. • Ensure the keyboard is connected to the keyboard connector rather than the mouse connector on the rear panel of the Workstation. • Ensure you are using a PS2 keyboard rather than a USB keyboard. • Replace the keyboard with a known working unit to ensure the keyboard itself is not defective. Monitor Doesn't Work If the display is blank, refer to "Display is Blank" on page 205. If the display works properly during the Power-on-Self-Test (POST), but goes blank when Windows starts, the display settings in the operating system may not be compatible with your monitor. To correct this, restart your Workstation in VGA mode: • Windows NT: Enter VGA mode when prompted during start-up. • Windows 2000: When prompted, press F8 and start the Workstation in VGA mode. After the Workstation is up and running, change the display settings in the control panel (Start > Settings > Control Panel). Refer to your operating system documentation for more information. 206 Chapter 11