Once you get the parts in your hand it becomes quite logical, with the new parts you'll see how to take the old ones off. Like I said before if your not comfortable doing this take it to a repair shop they won't charge you to much do the install.
G752VY-DH72 Win 10 Pro
512 GB M.2 Samsung 960 Pro
1 TB Samsung 850 pro 2.5 format
980m GTX 4 GB
32GB DDR 4 Standard RAM
Z97 PRO WiFi I7 4790K
Windows 10 Pro
Z97 -A
Windows 10 Pro