I have a Windows 8.1 HP Pavilion model 2000. My younger brother decided to put Windows 10 on it, he didn't partition or back up the Windows 8.1 OS... I've tried reverting back to Win8.1 but can't. So I've been trying to do a clean install of Ubuntu instead. I followed the UEFI tutorial, turned off fast boot, and turned of secure boot.
When I try to boot Ubuntu from a USB it tells me there's no Operating system on the drive. It clearly is because I can see the files after I burned them onto the USB, stuff like Wubi. I tried using Wubi from my desktop instead of the USB and it says its not compatible with EFI. How can I do a complete clean install of Ubuntu? I've had it before on another computer, but cant seem to figure it out on this one. I don’t want Windows 8 or Windows 10! Thanks!