GRUB2 Nightmare

Well, where to begin?

I installed the x64 version. Everything seemed fine, until I tried to boot back into Windows 7 x64. Grub2 didn't detected the partitions the right, and I wasn't able to find any solutions to my problem due to syntax differences between grub.cfg files. Grub2 wouldn't boot Windows 7 in it's primary partition. I had RemixOS installed on a logical partition, same HD. Updating both grub and grub2 didn't solve a thing. Since I couldn't find out the solution, I uninstaled RemixOS and restored my previous W7 mbr install(another nightmare for the most part).

There's a way to make the grub2 config less nightmarish?

There could be a few reasons of the problem, and one of them is a broken MBR on your hard disk. Reinstalling Windows could fix it, so from now you can try to install Remix_OS again. To be sure it work, at first you can make a testing installation on to USB stick or external HDD (installing Grub also there, not touching anything on your HDD) to see if Grub can detect your Windows partition.