Why you don’t try to reinstall the webcam software?
I think the software is corrupt… who knows why….
Visit the Toshiba European driver page, choose your notebook model, choose webcam software, download this and reinstall it.
Before you would start new installation, you should remove the previous version…
For me it sounds like that you didn’t install the webcam driver so a wizard popup. So you should download newest version of webcam driver: http://eu.computers.toshiba-europe.com > Support & Downloads > Download Drivers