Right-click the game .exe → Properties → Compatibility → Run this program in compatibility mode for Windows XP (SP2 or SP3) or Windows 98/Me .
| Error | Meaning | |-------|---------| | ERR_GFX_D3D_INIT | Device creation failure | | ERR_GFX_D3D_NODEVICE | No compatible GPU found | | ERR_GFX_D3D_SHADER2/3 | Shader stage‑specific failure (e.g., pixel shader vs compute shader) | | ERR_GFX_D3D_SWAPCHAIN | Backbuffer/present chain failure | errgfxd3dshader1 work
sfc /scannow