I have been struggling with a laptop of mine. I added Ubuntu to an old laptop that is used at my business, I already had Windows 10 installed and let Ubuntu's installer automatically install alongside Windows. I did not manage any of the install locations or paritions myself. The laptop has two hard drives, an SSD in the primary slot, and I replaced the disk drive with a HDD.
Now, the laptop will not boot to GRUB unless a USB drive is inserted. I have tried many different solutions for fixing this issue. I have recently tried automatic boot-repair on "Try Linux", and that did not solve the situation. I then decided to just start over from scratch and use a Windows boot USB, but when I try to boot from USB, the laptop just opens the GRUB and I am not able to access the USB.
I have included one of my logs from boot-repair for reference.
I am really lost on what to do to fix this issue.