A:AnswerYou can do whatever you want as long as you can manipulate Windows 10 as administrator. If you want to install another OS, yeah, go for it. I have heard that Max OS (the newer versions) can run on IBM based PCs, but why? Just run Windows or Linux. Either way, with any PC, you can run any OS that will run on Intell processors using an iBuy Power PC (mostly i7 and i9).
A:AnswerYes, it does. The Techs at Best Buy said they used to come with a remote control for lighting, but that wasn't the way it was with mine. Go to the Programs button on your Start Menu and select the ASRock Utility option and open the ASRRGBLED utility and voila! you will be able to select different lighting options. I set mine to cycle through the colors slowly and have liked the effect pretty much. Hope you find this before you give up.
A:AnswerThere are 4 DDR4 2666Mhz slots. I added another 16Gig for a total of 32Gig. If you replace the 2x 8Gig factory DIMMs with 4x 16Gig, you should be good to go.