Key Board Dun Work <_<

It was working fine. I shut off my computer to go watch TV/eat, and unpluged my USB Port Hug's power cord, since it gives electricty to all the things plugged into it: Keyboard, external drives, mouse. I'm an energy nub. ._.
I don't usually do this, as it spaces my mind.

Anyway, I run the computer and nothing works. I checked all the plugs for loose-sockes, but still the USB hug wasn't working. I put my mouse and keyboard directly into the computer again, and the mouse starts to work. No keyboard though. <_<

Any ideas about what's causing this?

I have checked:
USB port's power cable
rearranging what's plugged in where in the back of my computer
Stuff I said above.

Also, how long should a Velocity Keyboard last? I've had it a few months over a year. :[