Hopefully that's not a Sata III drive since PW can't see them apparently. Found that out with the pair on the system when giving a live PW cd a look.

This is why DiskPart tool, using GParted whille booted live, or another partitioning program would be the better options for seeing the Linux volumes removed. Once that is seen to a nice clean install of 7 will go right on much faster then installing any of the previous Windows versions.