Hi Phil,

Since it is a new piece of hardware there may be some interfering with the normal boot process of Windows. So, first try unplugging all devices from your computer, including:

• Printers.
• Scanners.
• Media Card Readers.
• Small Media cradles (iPod, PDA, MP3 player, etc.).
• Digital Cameras and Video Recorders.
• USB storage devices.
• CDs or DVDs from all optical drives.

The only devices you should leave attached to your computer are your monitor, mouse and keyboard, if the computer is a desktop.

Now check if you are able to open BIOS settings using the below steps or not:

1. Press and hold the Power Button for 5 seconds to turn your computer completely off.
2. Power on the system. As soon as the first logo screen appears, immediately press the F2 key, or the DEL key if you have a desktop, to enter the BIOS.

Then change your BIOS settings to default using below steps:

1. Restart the computer.
2. At the logo during restart, tap the F2 key repeatedly until you see Entering Setup in the top right corner of the screen.
3. Depending on the BIOS, you may need to press a key listed at the bottom of the screen to load default settings. For example, F9 on the Inspiron N5110.
4. Press ESC to exit the BIOS, and be sure to select Save and Exit to save your changes.

Now to change your Graphics card settings, you can reset it to default by installing it again using the below steps:

You can try the below troubleshooting steps which will solve your problem.

1. Uninstall the graphics card driver from Device Manager.
2. Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager.
3. In Device Manager, locate the display adapter and then double-click the device name.
4. Click the Driver tab, and then click uninstall Driver (including the driver software) and follow the instructions.
5. Do the same in Programs and Features look for anything related to NVIDIA and uninstall it as well.
6. Download and install the graphics card driver from NVIDIA support site
7. Here's the link for download: nvidia.com/download/index.aspx
8. Reboot the machine (PC or laptop) once driver has been installed.
9. After the reboot make sure that your games are set to use NVIDIA graphics card.

I hope this helps.

Regards,
Lokesh