Unable to use keyboard without Caps Lock on

Hi Guys, I gave my keyboard a little bit of a clean the other day (with relevant wipes) and since then my keyboard is not functioning correctly. It did turn itself on once or twice during the process, so I have clearly hit something I shouldn't have 😕

The problem I have is that I can't use the keyboard without enabling the CAPS Lock. Without using the CAPS Lock pressing random keys, produces random effects (mainly functional things) and with the CAPS LOCK on I can type normally, just all in caps (for this I am using my desktop!)

Troubleshooting to date:-

• Accessibility => Mouse & Trackpad => Enable Mouse Keys (off) always has been
• Accessibilty => Keyboard Preferences => Short Cuts => Restored to Default
• Accessibilty => Keyboard Preferences => Input Sources => British
• Accessibilty => Keyboard Preferences => Modifier Keys => Restored to Default
• I have a setup another user account but the problem persists in all accounts
• I have tried other applications but the problem is replicated
• I have rebooted several times to no effect
• OSX 10.9 (all updates up to date)

Any help would be greatly appreciated.

Thanks in advance.

Oh additionally the track pad seems to be doing slighly random things ie standard run click actually brings up sub menus!