Hi,

I don't know if the following two videos will be of any help, hopefully they will be.

This one shows how to open a Toshiba P55W laptop, but not how to remove the keyboard.

https://www.youtube.com/watch?v=XdzsayVU...

This one shows a fix for a keyboard problem in a Toshiba P55W laptop. It may not be your problem as you do not say what the problem is.

https://www.youtube.com/watch?v=eaBUdWEM...

If you still need to replace your keyboard, after watching these videos, you may to able to work out what else you have to remove to gain access to the keyboard.