Before inserting your new PNY NVIDIA professional graphics card, boot the PC with the monitor connected to the onboard (integrated/embedded/built-in) graphics card. Open the display adapters category in Windows device manager. You should see an entry representing your onboard graphics card. Right-click the onboard graphics card and then left-click the option to disable it. If prompted, click Yes to confirm. Close the device manager, and then take the normal steps to reboot. During the reboot, after Windows has shut down, tap the key (Example: F1, F2, or Delete) to enter the BIOS set up menu. In the BIOS set up menu, select the proper setting to disable the onboard graphics card, and/or to tell the PC to use the external PCIE graphics card as the primary display adapter (Example: Change Primary Video from "Auto" to "Onboard/Card," or to "Onboard/PEG"). Save the settings and exit. The display will go black. Immediately, press the On/Off button (and hold it pressed-in) on the front of your PC (usually for about five seconds) until the PC powers down. Unplug the power, ground yourself, disconnect the monitor cable from the back of the PC, insert your new PNY NVIDIA professional graphics board, connect one or more monitors to your new graphics board, connect the power, and boot to Windows.