So my laptop came with a copy of PowerDVD10 but I would prefer to use Media Player Classic (v126.96.36.19919). I had read somewhere you can make it use PowerDVDs codecs but I have no idea how to set this up. If it helps I'm on Windows 7 64-bit and I installed MPC through the latest Combined Community Codec Pack which is all 32-bit it seems.
I personally prefer the K-Lite Codec Pack over the Combined Community Codec Pack, as being much more evolved.
K-Lite also has as a separate download the K-Lite Codec Pack 64-bit: A bundle of 64-bit DirectShow filters that can be used together with 64-bit players, such as Windows Media Center.
Please note that some blu-ray copy-protections work better with Windows Media Player or with the software that was furnished with the disc.
Some more advice found in How to play Blu-Ray discs with Media Player Classic :
How to set up Media Player Classic to play Blu-Ray discs
These codecs and splitters should already be installed by your codec pack. If not, use another codec pack.
You can try UFUSoft Blu-ray Player, it is good and cheap, and officially authorized.