Hi
Firstly, unlike the MSI site I can see that  other an hosting this forum, Gigabyte I largely ignoring it  - lack of answered posts or indeed missing pinned / "sticky" posts would seem that this not getting the official backing I would expect. 
 
 Ok I want to replace the  supplied:  120GB SDD with say a Crucial M200 (256 Gb SSD) or even higher.  There should be a video or illustrated how to document on here.  I am ignoring Gigabytes support's suggestion of taking my new laptop to a dealer as that would be expensive and time consuming.  
Anyone done this?