Forum Discussion
UEFI -- No bootable device found
- Apr 24, 2026
So, I have a final solution and my Acer Aspire 3 A315-21-4808 is working fine now. The final solution was provided by Puraw of the Acer Community. Puraw in his comments said that "the Aspire 3 A315‑21‑4808 is limited by its 2016 AMD A4‑9120 platform and the last BIOS version 1.25 (June 2020). That firmware baseline does not include updated AGESA microcode for newer Windows 10 builds. Because of this, Windows 10 22H2 drivers will fail under UEFI mode and only boot in Legacy mode. To avoid instability, forget about 22H2 and install a legacy Windows 10 release that matches the BIOS support window — for example version 1909 (Nov 2019). This build is fully compatible with BIOS 1.25 and avoids the AGESA driver issues seen with 22H2."
Once I knew that I knew what direction to head to get this to a successful conclusion. I cleaned the new HDD, as there were 3 partitions sitting on it, that weren't doing me or the laptop any good. The cleaning took about 4 hours, but it was worth it. I was then able to convert the HDD from MBR to GPT and then ran the ISO I had downloaded a few days prior.
I'd like to thank all those who offered possible solutions. I ended up using them all, big and small, as the solutions ultimately had to be done for one reason or another.
So, I'd like to thank a few members of two communities that are available to us that have PC problems, hiccups, etc. I'd like to thank Puraw and Axxo from the Acer Community. As well I'd like to thank Peytong1180 from the Microsoft Community Hub. Without your help I probably would have ended up going to see my regular PC repair guy.
Once again thanks to one and all.
I have ASUS Zebook A4 did the update and ghosted some odd reason it can’t find a bootable device? I have loaded 5 different windows and each different ways he’ll even tried wiping it and doing Linux cinnamon still won’t load that. I’m stuck don’t what else to do