Track elected officials, research health conditions. For the best results, take the laptop to a licensed technician or send it back to the manufacturer. US News is a recognized leader in college, grad school, hospital, mutual fund, and car rankings. The laptop needs to be opened in order to confirm the problem, but do not attempt this unless you are familiar with PC repair and do not mind voiding the warranty. Most likely, the screen cable is loose or damaged, but the inverter and backlight can also cause this problem. Hardware failure is the likely cause when flicker occurs only when the laptop moves. Lower and raise the laptop screen repeatedly to determine if the flicker is related to movement. For Nvidia cards, VSync is found in "Manage 3D Settings." For Intel, look for "3D Settings" or "Asynchronous Flip." On ATI/AMD cards, turn on "Wait for Vertical Refresh." Horizontal flicker is reduced, which improves image quality. Vertical Sync, or VSync, locks the refresh rate of the application to the refresh rate of the monitor. Turn on Vertical Sync if the flicker occurs when DirectX or OpenGL is in use, for example, while playing a PC game.
In this case, return to the Device Manager, right-click your adapter and then "Driver." Click "Roll Back Driver" and "Yes" to confirm.
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Alternatively, you can revert to an older driver if the flicker began immediately after an update. Go to the manufacturer's driver Web page and search for this model to download the appropriate drivers. Look for "Hardware and Sound" in the Control Panel and click "Device Manager." Under "Display Adapters," you'll see the exact brand and model of your video card. This is the most likely cause if you've always had a problem with flicker.
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