If you've already done the above steps, but are still experiencing issues, try reverting your graphics driver to the previous version.
Disable any overlaying applications that might be interfering with the game, such as Discord or Steam.
You can check out our guide on updating your graphics drivers in Windows 10 if you're unsure how to do it.
Make sure you have the latest graphics driver installed.
However, if your PC can run the game but it's still crashing frequently, you can try several more troubleshooting methods to get the game working for you. If your PC doesn't meet the above minimum requirements to run COD: MWII, then, unfortunately, none of the other troubleshooting methods are enough to get the game running smoothly.
Storage: At least 125GB of space available.
Graphics: AMD Radeon RX 470 or NVIDIA GeForce GTX 960.
The minimum requirements to run the game are as follows: