if you just had a bad BIOS update.
Your should download an earlier versions extract it and change the name to G55xx.bin put it on your hard drive root off C:
Use the fail safe ezfllash Ctrl + Home, you have to have the bios file on the root of your hard drive and you must hold down the keys until Ezflash starts. If you search these thread you'll find this method discussed many times over the last 3 years so
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