To be perfectly blunt ; nothing modern. That video card sounds fresh out of 2008, and considering that most modern games require at least 4 gigabytes of RAM and a decent modern video card, you'll have to backtrack quite a while to find something playable.
Download steam and look through some games with recommended system specs similar to what you have. Some of the less graphically-intensive games I've played through the years have been the most fun I've had gaming... You can probably play stuff like binding of isaac, nuclear throne, spelunky, peggle, etc. I'm not 100% sure though, you'll have to compare your specs to the recommended/minimum system specs