Graphics cards help boost the graphics rendering capabilities of a computer. They frequently contain their own memory or RAM and have a processor dedicated to graphics. There are a variety of chipset manufacturers that produce graphics cards, like ATI and NVIDIA. NVIDIA cards usually come with a set of software called NVIDIA Control Panel, where you can adjust settings on your card like fan speeds, GPU output, etc. But what about when you want to reset your NVIDIA graphics card to default settings?
Open your start menu by clicking on "Start" in the lower left corner of your screen. Vista users click the Vista icon, yours does not say "Start."
Locate your NVIDIA software in the list of installed programs. Open your NVIDIA Control Panel by selecting it.
Select "Manage 3D Settings" under 3D settings in the left-hand menu. This will open your settings page for your graphics card.
Select the "Global Settings" tab in the 3D settings window.
Click "Restore" at the bottom of the window. OK the change if prompted. This will reset your NVIDIA graphics card settings.
Take notes of your current settings before resetting so you can restore these settings if need be.
Never overclock your GPU if you are unsure of potential effects; it can permanently damage your card.