Hello, I am having an Issue. I have a GeoBook 3 laptop which has Ubuntu on it. I planned to install Windows 7 and then upgrade to Windows 10 quickly. I changed South Bridge OS to Win 7 and the GeoBook switched off and it will not boot to Ubuntu or BIOS. BIOS doesn't work anymore and Ubuntu boots into GRUB but takes around 10 minutes to go into GRUB command line interface. Restarting doesn't work and I need to sell this laptop. Help would be greatly appreciated!