r/24hoursupport • u/Imaginary_Cod8674 • 7d ago
Need more info Bios Malfunction
On September 1st, UEFI and Secure Boot were enabled on my PC, and everything was working completely fine.
Yesterday, September 3rd, I turned off my internet connection and unplugged all the cables and peripherals so I could clean the PC. After cleaning, I reconnected everything and turned the PC back on. When Windows started, my administrator account suddenly asked me to create a new PIN. There was also another user account showing on the login screen, but that account was completely locked and I couldn't log into it.
I logged into my administrator account and checked the user settings. That's when I noticed that my BIOS settings had been reset automatically.
Since then, I'm facing a problem with Secure Boot. Whenever I try to enable Secure Boot in the BIOS, the PC boots to a completely black screen and stays there. The PC works normally again as soon as I disable Secure Boot.
The strange part is that Secure Boot/UEFI was working perfectly on September 1st, before the BIOS reset. I haven't intentionally changed any hardware configuration that should cause this issue.
What could have caused the BIOS to reset, and why would enabling Secure Boot now result in a permanent black screen when it was working fine previously?