Any clues were i can find out what this error message means, and how it's caused?

GPU 0, GpuMiner cu_k1 failed 73, an illegal instruction was encountered
GPU 0, GpuMiner kx failed 1
GPU 0 failed
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Earlier threads suggest OC-settings on cards, but i use Stock-settings, and still get this error.

It is due to power-loss, faulty gpu or other?

How can i find out what GpuMiner cu_k1 failed 73 actually stands for?

Using p106-100 cards, and running  GetPimp linux and Claymore 10.2