That model doesn't have an optical drive (ie CD/DVD drive) according to the following link. http://www.pcworld.co.uk/gbuk/laptops-netbooks/laptops/laptops/toshiba-satellite-c50-b-14d-15-6-laptop-black-10011201-pdt.html#longDesc
Scroll down to "Product Details" then look on the right under "Overview". You'll seeOptical Drive: NO
Toshiba should really have called it a "Netbook" instead of a laptop, but I guess because it's got a laptop-sized screen they saw fit to call it a laptop.
Just shows how important it is to carefully check what's it's got and what it hasn't got before buying.
Not having an optical drive can be real pain in the butt for some tasks.
The manual probably covers several different models with different specifications.