I was having this problem with a previous driver version, but haven't seen it since upgrading to the latest. Not in front of my machine right now, so I can't give you the version number. I will run 2 GPUs at auto intensity, or one at auto and one at 17, and they will run for days without issue.
ANyone else having issues with the nvidia driver crashing and causing a major hit in hashrates?
I may have a solution I can integrate into my batch if the NVPManager app allows a seamless pre-configured run with no user interactions......
interested on opinions. Its not recommended for machines you use while mining; it causes odd issues with video display apps such as flash, HTML5 containers, and media players....