Photoshop type tool

[Becker_Barrie]

Regardless of the font, size, or any setting, all I get is a straight line (like an underline). It had worked perfectly before yesterday, so I'm thinking I accidently hit something to make it do that. 

I would greatly appreciate any ideas.

[Nancy OShea]

Reset Type tool.  See screenshot.

[Moved from Get Started to Photoshop.]