Have you done a clean install of Windows or is this a dirty upgraded version? I've seen similar problems when you upgrade from W7 to W10 for example. But your PSU is also a very good candidate, do you have another one available to test with?
Asus ROG G55VW:
CPU: i7 3630QM
GFX: Geforce GTX660M with 2GB ram
RAM: 2x8Gb 2133MHz Kingston HyperX Impact (surprisingly the G55VW uses the 2133 X.M.P. profile)
Storage: RAID0 with 2x 256Gb Crucial SSDs (both msata, one in a sata adapter)
OS: Windows 10 x64