have you updated all your drivers Chipset IRST IME, What ever Burning program you are using? my G75VW works great on a clean install of 8.1 Reads and burns everything, I'm not sure about BD and I don't have any burnable disk. I burn with Roxio 2012 and Clone DVD, Clone CD.
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