i have a rig which im getting this error like in below:

"zilminer 0.2.20
Build: windows/release/msvc

No OpenCL platform found
CUDA Error: unknown error
Error: No usable mining devices found"

on my rig have only AMD cards no nvidia cards.
on the rig can mine eth without any issue.

i have working other rigs which are working with amd 8gb /4gb cards, but dont know why this specific rig not allowing to run zilminer exe.

any idea why getting this error ?

br,
bdmi9