This issue was found on the Toshiba C660-155 range of laptops.
When typing using the built in keyboard several keys are missed at random.
Faulty BIOS software.
Warning: Please be aware that by downloading this BIOS package you agree that in the event of a BIOS flash failure, you must take full responsibility. The BIOS update below is only for the C660-155 range. If you have any other model, then contact Toshiba.
- Make sure you laptop is plugged into a mains supply (ie place the laptop on charge)
- Download the latest BIOS update from the Toshiba website from here.
The above link is for the C660-155. Do not use it for any other model.
- Run the update.
- Restart your computer.