Do you know RPG's well?

Have you tried Fallout? Your laptop should run it well.

Eh... pretty sure you've tried YS right? And do the games have to be on steam?

The 仙剑奇侠传 series and the 轩辕剑 series.

Dragon Age: Origins, Knights of the Old Republic, The Witcher (all should run fine).

Perhaps Knights of the Old Republic (a bit old), or Dragon Age.

Fallout 3 and dragon age

evoland imo

Try Fallout 1 and 2. Might need some mod for HD resolution.

Dragon Age or Jade Empire.
Um...Alpha Protocol.

Drakensang - not much of difficult moral choices, but story is interesting enough and lots of fun with building your character - it based on some tabletop RPG system.
There was unusually high number of giveaways for this game lately, so it must be on sale somewhere (not on Steam, sadly).

Does not really fit your description, but a great and fun RPG nonetheless:

Cthulhu Saves The World - will even run on an old graphics chip w/o 3D support :P

Knights of the Old Republic will run excellent for you. Such a good game. Also the sequel and Jade Empire.

Original Deus Ex. Looks like an FPS, does both the character building and the "choice matters". Although it ends up messing up that last bit right at the very end of the game; to determine which ending you get you only get a single 3-way choice.

Alpha Protocol - you are building your char,buying weapons,armor + intel that you need for the missions and your choice got impact on the story so you may give it a try.

Take a look at Doom & Destiny (DRM free, Desura only, needs votes for Greenlight).

You need something that runs on your pc?.

-Nethack

-Dwarf Fortress - Adventure Mode

Ubberhardcore-true-rpg games.

You can't say you played RPGs without playing them... and nethack even runs on Android (yep, I also have it there)

Not always you need a better pc for getting the best gameplay...

Ohh, and both FREE.

The Elder Scrolls series. These are the best RPGs I've ever played. When you can't run Skyrim then try the others.
I've spent so much time for these. :)

id try mars war logs, it a new smaller title, but it's quite good

If you are looking for outstanding games that will run on your PC, you should be checking the GOG catalog.

On second thought, considering how much money you will end up spending on that site, perhaps it's better you don't.

The Elder Scroll3: Morrowind. And Planescape: Torment (not in Steam)

RISEN!

RISEN 2!

GOTHIC! [...]

or Deus Ex Human Revolution

Witcher, most certainly :<

I didn't know RPG owned a well.

Try Divinity 2: Director's Cut. It's so awesome game.

Borderlands should run too, but there isn't a very involved story. It's still very much fun, and a kind of FPS hybrid, with loads of loot finding.