Solutions - Windows 10 Compatibility Cookbook: March 23, 2016

Solutions
It’s critical that IHVs and OEMs upload their Windows 10 graphics drivers to WU for any hardware that they intend to support.
Note that hardware that has reached End-Of-Live (EOL) might not have drivers on WU. There is no solution in this case – the user must choose one of the options under Mitigations above.
Graphics driver migration to Windows 10
Graphics drivers are not included ‘in box’ or in other words, these drivers are not included in the
Windows 10 Media and Windows 10, like its predecessor, Windows 8.1, does not have any 3rd party graphics drivers in the Windows media kit or “In Box”. Instead, the graphics drivers for a broad range of devices are provisioned on WU, which allows hardware vendors to update drivers without requiring a change to the operating system image. Also, existing drivers are not migrated to Windows 10 during an OS upgrade to Windows 10 from Windows 7, Windows 8 or Windows 8.1. This also impacts upgrades from Windows Server 2012.
For upgrades and new installations, the graphics drivers must be obtained from Windows Update (WU) or the IHV/OEM web site for the relevant hardware. This requires an Internet connection. The drivers on WU are injected into the OS setup by Dynamic Update (DU) when a user upgrades their Windows 7 or Windows 8.x system to Windows 10.
NOTE: This does not apply to systems which come with Windows pre-installed, e.g. off-the-shelf computers purchased in a retail store. These systems already have the graphics drivers installed by the OEM. The OEM might also supply a DVD (for re-installing the OS) which includes the drivers.
After upgrading to Windows 10, users might find that there are no graphics drivers installed on their PC. This can happen for a few reasons:
The user elected to do a clean install, i.e. not an upgrade.
The user de-selected the option to check for updates during the upgrade, i.e. effectively disabled Dynamic Update (DU).
The Internet connection was not working during the upgrade.
The driver installation failed.
After a clean install of the OS, there will not be any graphics drivers on the PC until the WU client runs automatically and downloads the applicable drivers. In the interim the PC will be running the Microsoft Basic Display Adapter (MSBDA), which has limited capabilities, e.g. no support for multiple monitors, and the user might also experience poor performance compared to a hardware driver, e.g. slow frame rate or tearing on video playback.
For older PCs (typically built prior to Windows 7), it is possible that there are no drivers for Windows 10 on WU because the graphics adapters have reached End-Of-Life (EOL) and are no longer supported by the hardware vendors. Even systems currently running Windows 7 or 8.x might have been upgraded from a previous OS and could have EOL graphics adapters.
Newer PCs might not have drivers available because the graphics adapter was transferred from an older computer, e.g. during a hardware upgrade. This most often happens for computers with multiple graphics adapters where the user kept an old graphics card when purchasing a new machine in order to use multiple displays.
Another possibility for a small percentage of machines is that Windows Update only has “coverage” drivers. These are generic drivers that lack OEM customizations. A user who is delivered one of these drivers after upgrading to Windows 10 might see that some functionality is missing, e.g. function keys for controlling screen brightness no longer work.
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