A user has installed a new video card that is not being recognized. It is determined that the old video adapter is on board. Which of the following should be checked FIRST to resolve this issue?

A.
Remove the new video adapter and re-install the adapter.

B.
Re-install the drivers for the new video adapter.

C.
Ensure that the old video adapter is disabled in the BIOS and Device Manager.

D.
Determine whether the new video adapter is installed properly.