[H] EFI-UEFI drive access

[Joe User]

How is everyone managing to access Win 8 & 10 EFI/UEFI drives from 
outside the system? I have a All in One HP that is just stuck in a 
rebooting loop & the only recovery option that might actually work is a 
complete factory nuke & pave... I don't want to think about how to get 
inside this damn thing & yank the drive out!