Hi, this is still a work in progress but will be sharing updates as it needs to be tested more till we get to a point that its working 100%. Then (hopefully next 2-3 days) I will gather everything so you can apply this to your own OS/mobo. Anyhow, after a couple of tests, we finally got XP to work on ASUS Z390 motherboards. Special bios is not needed   This -for now- has been tested only for fresh installations. Will test later today if we can get old ones to work but might