My mom has an Asus X550CA laptop that came with Windows 8 on it. It's been having a lot of problems making it unusable, and 8 wasn't that great to begin with. I've talked her into upgrading to 10. Problem is, I can't get it installed. I've tried a bootable USB drive that I made, the actual DVD from the store (yes I'm legit here), then another USB created by a MS tool.
After reinstalling numerous times I thought it finally work but gets stuck in a reboot loop. Wiped it again, and I'm back to this error again and again:
(image is from online, ignore the server/hyper title)
I'm currently trying to update the bios. I've tried every other solution I can think of. Internet hasn't been much help either. I reformatted multiple times, changed the drive to mbr and let the installation reconfigure it for gpt. I'm pretty sure the laptop boots with UEFI, but I see no options in the bios to enable any kind of legacy support. I'm wondering if that is causing my issues.
Current error I get on the bootup is 0xc000021a. I've tried every known answer on the internet and nothing works.