Hello!
I'm new to this forum, so I hope this is a correct place to post this topic. I've had problems with typing "@" sign with my computer since like last year(copied the symbol for internet for not creating misunderstanding) and I don't know, why couldn't I type it. I haven't changed keyboard language or anything like that. My "@" typing key combination should be Ctrl+Alt+2. I've even tried using different keyboards. I have also tried using different languages, I can type "@" with other languages, but other languages also have weird symbol layouts, so it doesn't work out for me very well.
I'm using Windows 7 Home.
Hope it's enough info for you! Sorry, if I made grammatical mistakes.