HP Workstation x2000 hp workstation x2000 - Technical Reference and Troublesho - Page 211

Troubleshooting Your x2000 Workstation Case 5: Screen Goes Blank or Corrupt Image NOTE Case 5: Screen Goes Blank or Corrupt Image When the power button is pressed, the Workstation starts to boot and there is initially some activity on the monitor, but then the screen goes blank or the image is corrupt. • Screen becomes blank, or • Image is corrupt. Before removing the cover, always switch off the display and Workstation. Disconnect the power cord and any accessory cables. When checks have been completed, close the Workstation and reconnect the power cord and accessory cables. Verify that the Workstation boots correctly. Symptom.... Check that... Workstation boots correctly, but when the operating system starts loading, the screen goes blank or image is corrupt. The monitor supports the resolution and selected refresh rate. This type of problem can occur if the Workstation is configured using one monitor, then swapped with another one. If the screen is still blank or corrupt The video card is correctly inserted in the socket on the system board. Hard disk drive is correctly configured and cables are connected. How... 1. Reboot the Workstation in VGA mode. Then, access Display Properties through Start, Settings, Control Panel. 2. Change the display resolution and refresh values to settings that can be handled by your monitor. 1. Follow the instructions indicated in the above Note about removing the cover and switching off the Workstation. 2. Remove the AGP card, then carefully re-insert it into the socket. 3. Replace the cover and reconnect the power cord and accessory cables. Verify that the Workstation boots correctly. Refer to page 217 for further help, if required. Chapter 7 211