Officially the standing recommendation is the most recent available driver. However if you are still encountering Rendering Device Lost errors, you may need to check this troubleshooting (click here) or post more information about your system like your DxDiag file. If you do post your DxDiag file, be sure to paste the contents between two sets of four squiggly lines to ensure the report displays correctly. Do not paste in any MSInfo files as it is too big for a forum post.
~~~~ Paste DxDiag Here ~~~~