Blocked from updating windows
Layers acceleration is blocked on Windows versions older than Windows XP.
We require NVIDIA driver version 257.21 (June 2010) or newer, see bug 623338.
Every time Windows 10 runs updates (which I see no way to control), it updates my graphics driver. However this only enables you to hide a driver update; you have to uninstall it manually. Details on the Microsoft site can be found at support.microsoft.com/en-us/kb/3073930: To temporarily prevent the driver or update from being reinstalled until a new driver or updated fix is available, a troubleshooter is available that provides a user interface for hiding and showing Windows Updates and drivers for Windows 10.
The easiest way would be to use the official Microsoft trouble shooting guide consisting of a downladable tool which enables the option to hide updates, as known from previous Windows versions.
You can enable it by setting layers.acceleration.force-enabled=true in about:config.
This corresponds to the last 5 digits in the technical version number, which for instance is 8. on Windows 7/Vista.
This does not affect default functionality, as we use ANGLE instead of Open GL by default for Web GL rendering anyway.
We require the following Intel driver versions, or newer (September 2010), see bug 594877.
On Windows, you can also spoof your graphics system information to help debug driver blacklisting issues (see bug 604771): If force-enabling a feature doesn't work, that probably means that your hardware doesn't support it.
For example, layers acceleration currently requires support for 4Kx4K textures, which rules out some graphics cards, like the Intel G31/G33.