Step 3. Download the latest driver for the new graphics card, but don’t install it yet.
Step 4. Uninstall the older graphics drivers. Even if you’re installing a graphics-processing unit (GPU) of the same brand as before, removing the older drivers prior to installing the new card is a good idea.
Step 5. Power down the system.
Step 6. Carefully disconnect any power connectors from the old graphics card. Also undo and remove the screws that attach the connector bracket to the case.
Carefully disconnect the power cables from the old card and remove the screws holding it into place
Step 7. Ensure that no clutter (cables or wiring) surrounds the card. Note that large CPU heatsinks can interfere with physical card removal or installation, so you may need to remove this component. Ensure you detach the monitor cable from the old graphics card’s outside connector, too.
Step 8. Most motherboards have a little latch that locks the graphics card securely into its slot. You may find it necessary to hold this latch down while removing the card with your other hand.
You might need to hold down a latch with one hand while removing the graphics card with another