The ASUS ROG Strix G15 has an Intel Core i7-10750H CPU.
The ASUS ROG Strix Scar 17 has an AMDÃ‚Â® RyzenÃ¢â€žÂ¢ 9 5900HX CPU.
Seems that software you are trying to install has a problem with Intel processors with built-in graphics support.
I stand corrected, out of the 18 models of Strix G15, there are two models with the Ryzen processor (one Ryzen 9).
ASUS Download Center does not show a BIOS 311 available. Is that the BIOS that came with your laptop?
What process did you use to change BIOS 311 to 309? Windows Update or ASUS EZ Flash?
Are you trying to install an outdated Mitsubishi program? Have you contacted Mitsubishi for support?
You are confusing me with your different model numbers.
Please run DXDIAG and post.
This is a copy of mine: