Enable Re-Captcha - now unable to log in

Please help,

I was sick of getting spam customers, so I enabled the re-captcha for the log on and registration page.

Now I am unable to log into the back end.  and the captcha isn't showing?

Please help.

Very worried store owner.

If you have access to database then you can run this query

Update Setting set Value='False' where Name='captchasettings.enabled'

to disable the captcha so that you can log in to the store.
You need to provide more details for the diagnosis of the unavailability of captcha.