Your rig is for NVMe, SATA won't work, those of us that got ours with M.2 SSD are not having issues. Trade in your sandisk for a Samsung 951 which is standard issue with G752 or a 950 pro and you'll have to F6 install IRST RAID driver
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