I have a Windows Vista, and I used to make symbols all the time holding down the alt key and pushing in numbers. I'd make hearts a smiley faces and dots. I know how to make the symbols. Hold down alt and push your number sequence into the number pad on the right of the keyboard.

But recently, in the past week or so, I cannot make those symbols anymore. I hold down the alt and punch in my number but the symbol won't come up. Nothing does. I can still type in numbers and my alt key itself still works, but I cannot push them together to make symbols anymore. i don't know what happened. HELP!