Any error message come up when they crash?
Most likely a driver issue. I'd suggest looking in the Event Viewer, under Windows Logs > System.
Start up a game and play. After it crashes to desktop, make note of the time. Then open Event Viewer (
how to access Event Viewer in Windows 10) and go into Windows Logs and choose System.
Now find the entries that have the same time as you took note of when your game crashed and see if any are marked as Error and see what it says. If it makes mention of a "nvlddmkm" stopped responding, then that would most likely mean an Nvidia driver problem. If this is the case, I would suggest the following:
Download the most recent driver for your GPU and save it to an easy to find spot; such as the desktop.
Download DDU
Run DDU and choose to uninstall your driver from Safe Mode. The system will restart to Safe Mode and let you uninstall your current video driver. Then you restart your computer again.
Once back into Windows install the driver you downloaded.
After all that is done, test another game and see what happens.