Then you will have to have some experience with working on laptops as the parts are very small and if you don't get it exactly right you could short the new mobo out.
Even worse you could cause damage to hd
I have been doing computer repairs and custom builds for 12 years and I have never worked on a laptop personally cause they are so petite and I have large hands to start.
If it were me I would leave the repair up to the manufacturer.
Question: how old is the system?