On a UEFI / GPT system, the EFI partition is usually 100–260 MB; the goal is to free at least 15–20 MB.

Open admin Command Prompt
Start - type cmd - right‑click Command Prompt - Run as administrator.

Mount the EFI/System partition as Y:
mountvol Y: /s

This exposes the hidden system partition as drive Y:.

Go to the fonts folder and delete extra fonts
cd /d Y:\EFI\Microsoft\Boot\Fonts
del *.ttf
Answer Y when prompted; this is a standard Microsoft‑recommended way to reclaim spaceand is safe for normal systems.

If you see obvious OEM junk like Dell/HP BIOS recovery images under
Y:\EFI\Dell\BIOS\Recovery
or similar, move them off:

md C:\EFIBackup
move Y:\EFI\Dell\BIOS\Recovery\* C:\EFIBackup\
Do the same idea for any vendor recovery folders you recognize (Lenovo, Asus, etc.),moving them to C:

Verify free space and unmount

Still in CMD:

dir

Y:\mountvol Y: /d