Backspace not working on Mavericks (External USB Mac Keyboard A1243)

After upgrading to Mavericks OS, my external keyboard's backspace key has stopped working. I have gone through my keyboard settings and unable to find any problems. The backspace works fine on another computer. Any ideas what the problem is?
Thanks,
Connor

Hi williamsdesigns,
Welcome to the Support Communities!
The article below may be able to help you with this issue.
Click on the link to see more details and screenshots. 
One or more keys on the keyboard do not respond
http://support.apple.com/kb/ts1381
Cheers,
- Judy

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