How to fix a second monitor not detected in Windows 10 and 11

On Windows 10 and 11, you can use these steps to fix a second monitor not detected on your PC, and here's how.
PC Magazine

GPU-Z Can Now Detect Fake Nvidia Graphics Cards

The chances of you purchasing a fake Nvidia graphics card remain quite small, but then there's always a cheap card on eBay that's very tempting. Is it real? Now you can tell using this free utility.
CCM

How to update NVIDIA drivers: Windows 10, Windows 11 (2023)

Use the hassle-free methods below to rapidly update the driver for your NVIDIA Graphics card, through the NVIDIA Control Panel. There is the NVIDIA auto detect feature which is part of the NVIDIA ...
Bleeping Computer

GPU-Z Can Now Detect Fake NVIDIA Graphics Cards

Sellers have been modifying lower end NVIDIA graphics cards and selling them as more powerful cards online. In a recent version of the GPU-Z graphics card information utility, TechPowerUp has added ...