I know this is quite an old thread but just found it today and decided to create an account and share my experience with windows 10 and an early UEFI chip to be registered somewhere in the web . My father has a Dell's Inspiron 14 which came with windows 8 and was approved for that OS. When the Windows 10 came out I enrolled all the computers of the house into the free upgrade period of Windows 10 and this notebook included. So I installed Windows 10, the computer ran it for a few weeks and after that the computer was bricked. My dad came to me with the computer, being the fixer of tech around, and I found it particularly weird that it did not boot at all nor responded to any battery removal (being the notebook battery, or the cmos, or both) or reset button pressed. I must mention that this was a computer that was launched in the hype of "ultrabooks are the thing now", so UEFI and integration of booting process and OS launching was the bet of the moment (and the reset button on the back of the notebook/bios quite an important fix for common boot issues). Anyhow, I opened the notebook, removed the motherboard, desoldered the bios, bought a replacement and simply replaced the whole chip. After putting the whole thing together... Ta da!! It worked! So I thought it could be a problem that would be fixed with the latest version of the bios (I trust developers that much!!) so I flashed it with the latest version and returned it to my father. After a while, my father came to me with the same problem again... So I re-did all the process and replaced the bios again (I had bought something like 5 replacements just because shipping was more expensive than the chip itself) and, having done some research on the issue, found someone saying that this could be some incompatibility between the new bios firmware and windows 10 and that an older version of the bios firmware could fix it. Having not much to do, decided to keep the older version of the bios (because this chip has some no-downgrading version flashing thing going on) and returned the machine to my already annoyed dad. And then, for the last time, the same problem happened again! Computer bricked after a shutdown, never to turn on again. This time, I replaced the thing for a final round and removed Windows 10 to go back to Windows 8.1. After that, no more problems! And this whole thing happened a few years ago (and the system runs fine with Windows 8.1 since then) so... better confirmation than this one is not possible! To conclude: definitely Windows 10 destroys some UEFI bios out there that weren't made for it! And I have the corrupted chips to prove!