HP Dc7700 HP Compaq dc7700 Business Desktop PC Service Reference Guide, 1st Ed - Page 232

Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Blank screen (no video). (continued) Monitor settings in the computer are not compatible with the monitor. Cannot enable integrated graphics after installing a PCI Express graphics card. Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. Blank screen and the power LED flashes Red six times, once every second, followed by a two second pause, and the computer beeps six times. Beeps continue for five iterations after which the LED flashes will continue until the problem is resolved. On systems with Intel integrated graphics, the integrated graphics cannot be enabled after installing a PCI Express graphics card. Pre-video memory error. Pre-video graphics error. Solution 1. Restart the computer and press F8 during startup when you see "Press F8" in the bottom right corner of the screen. 2. Using the keyboard arrow keys, select Enable VGA Mode and press Enter. 3. In Windows Control Panel, double-click the Display icon and select the Settings tab. 4. Use the sliding control to reset the resolution. The integrated graphics can be enabled in Computer Setup if a standard PCI graphics card is installed. 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. For systems with a graphics card: 1. Reseat the graphics card. Power on the system. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. D-14 433612-001 Service Reference Guide, dc7700