Dell Inspiron 7000 Dell Inspiron 7000 Reference and Troubleshooting Guide - Page 129
solid colors and to display all pixels
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The Video Test Group of the Dell Diagnostics consists of the following eight tests, each of which verifies a particular video function or group of functions on your display or on an external monitor: Video Memory Test - Checks the integrity of characters generated from data in the video memory Video Hardware Test - Checks the functions of the cursor register and the horizontal and vertical retrace bit registers Text Mode Character Test - Checks the video subsystem's ability to present text mode data Text Mode Color Test - Checks the video subsystem's ability to present color in text modes Text Mode Pages Test - Checks the video subsystem's ability to map and present all available video text pages on the display or monitor, one page at a time Graphics Mode Test - Checks the video subsystem's ability to present graphics mode data and colors Color Palettes Test - Checks the video subsystem's ability to display all available colors Solid Colors Test - Checks the video subsystem's ability to show screens full of solid colors and to display all pixels All of these tests, except the Video Memory Test and the Video Hardware Test, are interactive. These interactive tests display images on the display or monitor and require you to respond with the following steps: 1. Examine a displayed image for correctness. 2. If an image is correct, type y. 3. If an image is incorrect, type n. The following sections describe each of the tests in the Video Test Group. Diagnostic Video Tests B-1