Blank screens, display monitor flickering, squealing noises, incorrect text and monitor display sizes are all signs that require your graphics card settings to be adjusted. Thankfully, you can resolve many of these issues without having to dismantle your computer. By checking the connections and altering the refresh rate and resolution settings, your graphics card diagnosis will lead you to a fast and clearer visual repair.
1). Check the connections from the graphics card and video cable and verify that each one is securely attached if a blank or black screen is displayed. If your computer monitor does not work correctly, go to the next step.
2). Replace cables that have bent or damaged pins in the connector. If your computer monitor does not work correctly, go to the next step.
3). Change your display resolution if the text or monitor display size is incorrect. Click the "Start" button, click the "Control Panel" and then click "Adjust screen resolution" under "Appearance and Personalization."
4). Click the "Resolution" drop-down list and then move the slider to the "Recommended" resolution size for your monitor. Click "Apply." If your computer monitor does not work correctly, go to the next step.
5). Change your refresh rate if the display flickers. Click the "Start" button, click "Control Panel," and then click "Appearance and Personalization."
6). Click "Personalization," click "Display Settings," and then click "Advanced Settings."
7). Click the "Monitor" tab and then check the "Hide modes that this monitor cannot display" if it is not already checked.
8). Click the pull-down list under "Screen refresh rate" and select a new refresh rate. Click "Apply" within 15 seconds after your display illustrates the new changes otherwise the changes will not take affect. If your computer monitor does not work correctly, go to the next step.
9). Visit the graphics card manufacturer's website and update the driver for the graphics card.
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