The Elder Scrolls II: Daggerfall is supposed to be a very good game. I myself have only just started playing it (as I just got my PC on the weekend), but it's fun from what I've played.

I've only just started playing that, too, so I'm not entirely sure. However, from what I've read it's very prone to crashing, so maybe some performance updates/mods will have to be installed. I'm playing using DOSBox, I'm not sure if you're trying to go the same route or not.

https://www.youtube.com/watch?v=_xEr5HBoKhA

Kingdoms of amalur  is pretty good

The Elder Scrolls IV: Oblivion, my personal favourite and overall an excellent game that you can lose hundreds of hours to. Morrowind and Skyrim are also good choices.

Depends of what kind of WRPG you're looking for...from top of my head, here are some, mostly older, games:

Party: Planescape: Torment, Fallout 1/2, Baldur's Gate 1/2, Arcanum, Might&Magic VI/VII, Knights of the Old Republic 1/2, Wizardry 8, Neverwinter Nights 2...

Solo: Gothic 1/2, Vampire: The Masquerade - Bloodlines, Morrowind, Risen 1, Arx Fatalis, Fable: Lost Chapters, Witcher 2, Two Worlds 2...

If you're looking for something in particular (i.e. story driven, party turn-based WRPG), please feel free to specify.

Oblivion and Skyrim are both good choices to start with, flip a coin I suppose?
Morrowind is a bit dated so if that turns you off, I'd play it after the other two games.

Wasteland 2, Pillars of Eternity, Divinity: Original Sin, Shadowrun series.

I heard that the Ultima games are also good, especially Ultima VII.

You have a good chance of liking Pillars of Eternity if you like Baldur's Gate and such.

Might and Magic VII
Might and Magic VI
Might and Magic VIII
Wizardry 8

Also can recommend Fallout 1/2/3/NV, TES3/4/5, Rage of Mages 1/2, Divinity: Original Sin, Gothic 3, The Witcher 3, Borderlands 2, Diablo 1/2/3, Dragon Age: Origins, Wasteland 2.