The miner has been working for a week without problems but the last two days that this happens every 2 or 3 hours, some solution?

2018-03-15 3:27:04|gpu_id 2 76 0 an illegal instruction was encountered
2018-03-15 3:27:04|gpu 2 unresponsive - check overclocking
2018-03-15 3:27:04|cudaMemcpy 1 failed

Thanks!