A recent driver update might be unstable, or an old one may lack support. : Download the latest drivers from : If the error started immediately after an update, go to Device Manager Display Adapters > right-click your GPU > Properties Roll Back Driver 4. Change In-Game DirectX Version
Fix for errgfxd3dshader1 work error
errgfxd3dshader1
Sometimes the latest driver breaks support for legacy shaders. Search for a driver from 2–3 years ago. On NVIDIA, look for "Studio Drivers" (more stable) rather than "Game Ready". errgfxd3dshader1 work