A Technician Has Just Upgraded the Software Drivers for a PCI-E

A technician has just upgraded the software drivers for a PCI-e graphics card. After rebooting Windows, the display screen is now unreadable in any way. After rechecking his documentation he realizes that he installed a driver for an earlier model of the card. Which of the following is the best response to get back a usable screen and fix the issue?

A) Reset the bios to disable the PCI-e slot.
B) Physically uninstall the card and put the old card back in; then uninstall the incorrect drivers.
C) Reboot the PC to safe mode w/networking and uninstall the incorrect driver. Download the correct driver. Reboot again normally and install the correct driver.
D) Remove the graphics card, return to the store, and exchange it for the one that matches the new driver.
E) It could be a bad monitor. Try a known good monitor.