Premiere Elements 15 crashes during rendering

>Windows 10 with a hi end gaming PC. Windows updates are automatic

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter
nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
-for Premiere Pro (and MAYBE Premiere Elements) use the STUDIO driver, not the GAMING driver
-such as (this MAY not be the latest) https://www.nvidia.in/Download/driverResults.aspx/177929/en-in
If you have a laptop you MAY also need to check for a laptop specific nVidia driver
ATI Driver https://www.amd.com/en/support
Intel https://downloadcenter.intel.com/product/211969/Intel-HD-Graphics-Family
There are also intermittent reports that the newest driver is not always the best driver due to driver bugs or compatibility issues, so you MAY need to try an earlier driver version

If software works reliably for "many years" and now crashes, something in the computer changed.  The software didn't.  Start looking for hardware failures.   It can be anything from minor disk failures to something running that uses up RAM.   You deserve sympathy because these failures can be hard to find!

Windows 10 with a hi end gaming PC. Windows updates are automatic.

Mac or Windows and exactly which version of the operating system?

Has your operating system performed an update between working and not working?