HP DC5100 Troubleshooting Guide - Page 37
contrast controls., Adjust the monitor brightness - graphics card
UPC - 072000919491
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Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause 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. Pre-video graphics error. Blank screen and the power LED flashes Red seven times, once every second, followed by a two second pause, and the computer beeps seven times. Monitor does not function properly when used with energy saver features. Dim characters. System board failure (ROM detected failure prior to video). Monitor without energy saver capabilities is being used with energy saver features enabled. The brightness and contrast controls are not set properly. Cables are not properly connected. Blurry video or requested resolution cannot be set. If the graphics controller was upgraded, the correct graphics drivers may not be loaded. Monitor is not capable of displaying requested resolution. Graphics card is bad. Solution 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. Replace the system board. Disable monitor energy saver feature. Adjust the monitor brightness and contrast controls. Check that the graphics cable is securely connected to the graphics card and the monitor. Install the video drivers included in the upgrade kit. Change requested resolution. Replace the graphics card. Troubleshooting Guide www.hp.com 2-21