Have the same problem since 4 hours. My rig works pver year without problems but today i've seen error with CUDA.
CUDART error in CudaProgram.cu:127 : an illegal memory access was encountered (77) GPU1 initMiner error: an illegal memory access was encountered CUDART error in CudaProgram.cu:127 : an illegal memory access was encountered (77) GPU2 initMiner error: an illegal memory access was encountered
or
CUDART error in CudaProgram.cu:127 : an illegal memory access was encountered (77) CUDA error in CudaProgram.cu:102 : an illegal memory access was encountered (700) GPU2 initMiner error: an illegal memory access was encountered GPU1 initMiner error: an illegal memory access was encountered
Anyone know what to do with this? Virtual memory is fine.