Didn't work either with old graphic drivers. They might have been Win 7 defaults.
I downloaded latest beta drviers - 334.67-notebook-win8-win7-64bit-international-beta.exe - from Nvidia (installed only the driver).
With some configuring and using 2013-04-30 cudaminer, i got about 6.2 khash/s. It was even 9 at some point but not anymore. Don't know what happened.
Here's my configuration:
cudaminer.exe -d 0 -i 0 -l 12x4 -C 0 -m 0 --benchmark
Newer version of cudaminer got me far less hashes.
All-in-all, no point mining with that