Not advisable to install win 7 drivers on win10, very low chance it will work. Most likely you have problems installing the win7 driver and have issues later.
Just look at the specifications of the laptop :
https://www.asus.com/my/Laptops/ROG-G73Jh/specifications/
Graphic is : Graphic
ATI Mobility™ Radeon® HD5870 1GB GDDR5 with
Since its AMD, just go to amd website to download win10 drivers :
https://www.amd.com/en/support/graphics/amd...-radeon-hd-5870
The reason why asus never put the win10 driver in their website is because they want you to buy new laptops, so they can earn. But the graphic chip supplier (AMD) will always put the latest driver in their website, until they too no longer supports it (usually > 10 years).
Windows 10 problem, font size