I'm trying desperately to uninstall Ubuntu 14.04 and replace it with Windows 7, but I'm encountering serious issues. See this thread: Trouble installing Windows 7 via USB
TL;DR I have a Windows 7 ISO on a USB that won't boot. BIOS doesn't recognize the USB. I have a second USB also with the ISO, and it recognizes it, but won't boot. I tried to see if a Ubuntu ISO will work, but that also has no effect. I'm taken to the grub screen, I select
Try Ubuntu, there's a black screen, and then back to the grub. No purple background either.
I'm wondering if I can use boot-repair to wipe this HDD, then plug the USB in and install Windows. My concern is that I'll be in the same situation, but without the ability to boot into my computer any longer.
Here's what I have so far: My OS in use is on /sda2. I have an boot/EFI partition on sda1. Boot-Repair gives me the option to purge and reinstall the grub of /sda2. These are the commands:
sudo dpkg-configure-a sudo apt-get install -fy sudo apt-get purge-y-force-yes grub* shim-signed linux-signed*
The instructions ask:
Do you want to have all GRUB 2 files removed from /boot/grub? Your system would then be unbootable if you don't install another bootloader. Remove GRUB 2 from /boot/grub?
To my noob-ish mind, this sounds like the right course of action, considering literally nothing else that I've done has worked.
I've tried WinUSB, UnetBootin, Startup-Disk-Creator, when I encounter the black grub screen during boot, I changed the code to nomodetest and that didn't work, I changed the grubx64.efi to fallback.efi, etc. I'm backed up to a wall here. Any help would be great!