URGENT HELP!!! Iray not working on New System

[MarcCollins89]

I recently upgraded my computer to a new Motherboard & CPU (ASUS ROG Strix Z790-E x1 & Intel 19 13900KF CPU) while keeping my RTX 3070 GPU. But for some reason it's refusing to notonly render my scenes but also display them in Iary Mode.

Among the log errors I get these

2023-04-01 14:55:19.054 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(305): Iray [WARNING] - IRAY:RENDER :: 1.1 IRAY rend warn : GPU 1 (GeForce RTX 3070) with CUDA compute capability 8.6 cannot be used by iray photoreal.
2023-04-01 14:55:19.054 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(305): Iray [WARNING] - IRAY:RENDER :: 1.1 IRAY rend warn : There is no CUDA-capable GPU available to the iray photoreal renderer.

And these are the warnings I get when I try to render a scene

2023-04-02 18:04:29.232 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(305): Iray [WARNING] - IRAY:RENDER :: 1.0 IRAY rend warn : The 'iray_optix_prime' scene option is no longer supported.
2023-04-02 18:04:29.232 Iray [INFO] - IRAY:RENDER :: 1.0 IRAY rend info : Allocating 1-layer frame buffer
2023-04-02 18:04:29.248 Iray [INFO] - IRAY:RENDER :: 1.0 IRAY rend info : Using batch scheduling, caustic sampler disabled
2023-04-02 18:04:29.248 WARNING: ..\..\..\..\..\src\pluginsource\DzIrayRender\dzneuraymgr.cpp(305): Iray [ERROR] - IRAY:RENDER :: 1.0 IRAY rend error: Cannot render: found no usable devices.
2023-04-02 18:04:29.248 Iray Render error: Invalid parameters (NULL pointer).

 

[Meaning Less]

whenever you change hardware always make sure to do a clean install of all drivers, especially the video driver in this case.

 

[Vollezar]

Try setting this to ON or OFF in the Nvidia Control Panel/Manage 3D settings. I had the same issue once and if I remmebr correctly that's what fixed it for me. Not 100% though