I can't type lower case Ñ or Ï in Windows 8

Update

I have been trying some tests to narrow it down for you, on my system - I had to remove the US keyboard fully for the international keystrokes to work. Only then did it start working for me (such as: ô, ñ, ï).

Of course, that makes using some of the overlapping special characters more difficult to use.

Other Option

The other, more laborious option, is Windows Alt Codes. The way this works is you hold ALT and type out the numbers on the numpad (in my experience, it must be the numpad).

For ñ: ALT+0241

For ö: ALT+0246

The Alt codes work without an international keyboard setting, if others need it short term in the future.