Unable to query number of CUDA devices

If you see an error "Unable to query number of CUDA devices" your drivers didn't detect any GPU in the system and because of that the mining won't work. There can be several different reasons for it. Most common are:

You have applied too high overclock;
You have applied too much undervolt;
You are using the wrong drivers;
There are no drivers installed;
You are using AMD GPUs with Nvidia mining client.

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