Can't use regular chat on my CPU

[Arachnophobic]

Have had this problem, for some reason, the default "t" to talk in "say all" is not wokring on my upstairs cpu.  I never binded anything to the
"t" key and I don't know whats wrong.  On all my other cpus its fine.  ANY HELP?!?!?

[Winnie the Pooh]

Simple.

Type:

\bind t messagemode

in your console. Press enter. Problem solved.

[Man of Tacos]

Make sure the server didn't mute you.