Can you provide your full system specs?
How old is the system?
How was windows loaded, fresh install, migrated from another system, etc?
New problem?
Started after you did...
It's a brand new build (all components).
Aorus Master F9b / i9-9900K CPU / 32Gb Vengeance LPX RAM / 3*NVMe drives / H115i cooler / HX850i PSU / Fractal Define R6 case
O/C 5.1GHz / PC3400 - stable before and after F9b BIOS flash.
It was a fresh Windows 10 Pro x64 build, upgraded to 1903, on BIOS F8. On this BIOS, the post boot LED was always A04. Only noticed this 47 LED sometime after flashing beta BIOS F9b. The only significant BIOS setting that I have changed since flashing F9b, was to enable DAC-UP +0.3v.
This is not causing me any issues, to the best of my knowledge, but I would just like to know what, exactly, code 47 means?