Do you have GPU_FORCE_64BIT_PTR=1 in you environment variables?
Change it to 0.
setx GPU_FORCE_64BIT_PTR 0
and restart Windows
Hi! Where? this my bisminer.exe.conf
batch_size="8192" delay_between_batches="0" />
batch_size="8192" delay_between_batches="0" />
batch_size="8192" delay_between_batches="0" />
batch_size="8192" delay_between_batches="0" />
batch_size="8192" delay_between_batches="0" />
batch_size="8192" delay_between_batches="0" />