How I fixed an old computer using AI

In this video you will learn what the Grub bug is, what causes it and how to fix it. And how to fix the EFI boot partition.

Command line commands to fix the GRUB problem and their explanation:


bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd
diskpart
list disk
select disk 0 ← (if it's the right disk)
list partition
list volume
exit
If after the bootrec /rebuildbcd:
command it showed you something like:
Total identified Windows installations: 0
→ It means that it did not find any Windows on the attached disks, which indicates a problem with:
damaged partition
different disk format (GPT on legacy BIOS)
wrong drive letter assignment (e.g. system partition not assigned as C:)
What to do next - step by step 1. Run diskpart and check the disks and partitions
diskpart
list disk
select disk 0 ← (if it's the right disk)
list partition
list volume
exit

Look for a partition that is about 100-500 MB (boot) and another with Windows size (e.g. 40+ GB). Make a note of their letters and types.
3. Try manually reconstructing the bootloader:
If you have found the correct system partition (let's say it's D:) and boot partition (e.g. S:), use:
(use this command in the classic command line, not in DISKPART!)
bcdboot D:\Windows /s S: /f BIOS
Done, the computer should be working. Close the command prompt, turn off the computer, and then turn it on.

My free creation in Keynote in collaboration (some hand drawn elements) with my best friend Eva.

Link to her YouTube channel:    / @evisssek.d