Samsung S3 password keyboard

Took my phone off of the charger last night, powered on and on the password screen, the keyboard will not come up. After several minutes, it says that the keyboard has failed. I have cleared the cache and attempted to download kii keyboard, however I am unable to get access to it without unlocking my phone. Please help! I don't want to factory reset if at all possible.

Welcome to Android Central! Do you mean you cleared the system cache partition?