No worries guys, it took me about 4 hours to find the solution :/
Google is not very smart when it comes to vista, not just yet anyway, it's like finding a needle in a haystack at times when you have an uncommon problem.

To fix my PC I booted from the vista DVD, and then chose 'command prompt' and typed:

bootrec /fixmbr
bootrec /fixboot

Which basically writes the Vista boot loader back into the boot sector of the disk...
Grub had taken over in my case, but it's sweet now.


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12. How to uninstall GRUB from my hard disk drive?

There is no concept uninstall in boot loaders, because if you uninstall a boot loader, an unbootable machine would simply remain. So all you need to do is overwrite another boot loader you like to your disk, that is, install the boot loader without uninstalling GRUB.

For example, if you want to install the boot loader for Windows, just run FDISK /MBR on Windows. If you want to install LILO (I can't imagine why you want to do such a thing, though), run /sbin/lilo on GNU/Linux.