I recently replaced my laptop and installed Webroot SecureAnywhere Antivirus 2013 (along with installing all my other software). It seems to interfere with my external keyboard (but doesn't interefere with the Bluetooth mouse). I can type in my password for the computer at start-up and then one more keystroke. Thought it might be the Bluetooth keyboard, so I gave up and bought a USB keyboard. Same problem. After a lot of frustration trying to identify the source of the problem, I finally did a factory reset and reinstalled every piece of software individually with a restart and test of the keyboard at each step. Webroot blocks the keyboard. Is there a setting or something I can do on Webroot to allow an external keyboard (running Windows 7 Home Premium 64-bit on Dell Inspiron i15R-1633sLV 15.6-Inch Laptop).
If that doesn't help, please open a support case, because support will want to collect logs for an issue like this.
I will report after starting the support case.