Yay! Finally I'm able again to run D3D9 games and programs in Windows Vista Extended Kernel using the newer version of the Intel HD Graphics 4000 driver!
So, I used WineD3D to do this. I copied the WineD3D d3d8.dll, d3d9.dll, and wined3d.dll files to System32, replacing the original ones. I also renamed the igdumdim64.dll and igdumdim32.dll files in System32 and SysWOW64.
WineD3D works by emulating Direct3D 8 and 9 into OpenGL. However, it is not perfect and there are still some crashes.
What it can do:
Open the Intel HD Graphics control panel
Play video files using Windows Media Player
Play Chess Titans by running the chess.exe file located in the C:\Program Files\Microsoft Games\Chess folder
Use screen savers (except Ribbons, crashes with code 0xc00000fd)
Play D3D9 casual games
and other light 3D rendering activities that are done by the D3D9 API
What it cannot do:
Use the Windows Aero theme
Run DxDiag
Perform D3D9 benchmarks
Open Games from the Start menu (this might be a bug)
Play D3D9 demanding games
and other heavy 3D rendering activities that are done by the D3D9 API
Other bugs:
The video playback sometimes slowing down and not syncing with the audio in Windows Media Player if the video resolution is higher than 480p or if the Windows Media Player is maximized
Windows Explorer crashes upon closing the Windows Photo Viewer
Some fullscreen games don't revert the screen resolution when exiting fullscreen mode, going to desktop by pressing Windows logo key, or switching between windows. They only revert the screen resolution after quitting the game
DXVK's D3D9 also most likely will work in Windows Vista Extended Kernel, even much better than WineD3D. However, DXVK only works on graphic cards with Vulkan API, and Intel HD Graphics 4000 doesn't support Vulkan.
Proof:
GTA San Andreas also works successfully on WineD3D. But if the Visual FX Quality is too high, the game will become very slow and unplayable, especially when in Red County. And the intro's FMV only plays the audio but still can be skipped. Unlike when using the native D3D9 which the game keep runs smoothly even with highest graphics quality on the same hardware and also can play the intro's FMV videos perfectly. Hope the DXVK's D3D9 will improve the performance so much and become faster and better graphics quality than the native D3D9.