Hi,
Here are some troubleshooting steps that may help in solving the issue.
- Start by rebooting your Toshiba tablet, press and hold the power button for 10 seconds or until it completely turn off.
- Once done, boot it back up and see if the onscreen keyboard will work or not.
- If it will not work do contact Toshiba Support first for more troubleshooting steps that may help.
Toshiba Support site.
http

/support.toshiba.com/