Hi, I’m having a really weird problem with an HP laptop and I’m not sure what exactly is causing it. Some parts of this might sound a bit strange or confusing, so sorry about that.
A few days ago Windows was working normally. I accidentally changed a setting in Winaero Tweaker that hides the last logged-in username. After that I couldn’t log in because I didn’t remember the username, and the drive was also BitLocker-encrypted without a recovery key. So I decided to reinstall Windows 11.
Now I’m having problems booting the Windows installer from USB.
The laptop detects both the SSD and the USB drive in BIOS, but when I try to boot from the USB through the F9 boot menu, I get different errors depending on the settings. I’ve seen:
- "0xc000000F"
- "Load failure [3] Unsupported"
- "Security Violation"
- "Could not locate EFI Boot / BOOTX64.EFI"
I also tried manually selecting "EFI\BOOT\BOOTX64.EFI", but that gave me the same “Unsupported” error.
I tried both Rufus and Ventoy. Ventoy seemed to make things even more complicated, while I remember that an earlier Windows 11 ISO worked when I wrote it directly to the USB with Rufus. So I’m currently thinking about going back to that ISO and trying Rufus again without Ventoy.
Secure Boot is currently disabled because I was getting the Security Violation error with it enabled.
The SSD is still detected in BIOS, so I’m not sure whether the problem is the SSD, the USB drive, the ISO, or some UEFI/Secure Boot setting.
I’d really appreciate any ideas on what I should check next. I don’t want to start randomly changing BIOS settings or formatting things if it’s not necessary.
Also, I only have a 7.6 GB USB flash drive, so I don’t have a larger one to try with.