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Step 1
Log in to the administrator account in Windows Vista and click "Start."
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Step 2
Open "Control Panel" folder and select "Hardware and Sound."
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Step 3
Click on "Device Manager." Then click on the "+" sign next to "Display adapters" to expand this entry.
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Step 4
Right-click on the video adapter name, for example "Nvidia GeForce" and choose "Uninstall." Click "Yes" to confirm.
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Step 5
When prompted, click "Restart Now" to reboot the computer and finish the process.












