Windows 10: No Display After Enabling Secure Boot – Only Color Cycling on All-in-One PC

Discus and support No Display After Enabling Secure Boot – Only Color Cycling on All-in-One PC in Windows 10 Software and Apps to solve the problem; Hello everyone,I have a CSL All-in-One PC running Windows 11. I recently enabled Secure Boot in the UEFI firmware settings via the "Advanced Startup"... Discussion in 'Windows 10 Software and Apps' started by Dina Osmanagic, May 14, 2025 at 2:58 PM.

  1. DINA OSMANAGIC
    Dina Osmanagic Win User

    No Display After Enabling Secure Boot – Only Color Cycling on All-in-One PC


    Hello everyone,I have a CSL All-in-One PC running Windows 11. I recently enabled Secure Boot in the UEFI firmware settings via the "Advanced Startup" options Settings → Recovery → Restart now → UEFI Firmware Settings.After restarting, the screen no longer shows anything usable — only a rapid color cycle red, green, blue, black, etc.. There is no access to BIOS or any boot screen. However, I can still hear the Windows startup sound after a while, so I believe the system is running in the background.What I’ve tried so far:- Removed and reinserted the CMOS battery CR2032- Tried multiple HDM

    :)
     
    Dina Osmanagic, May 14, 2025 at 2:58 PM
    #1
Thema:

No Display After Enabling Secure Boot – Only Color Cycling on All-in-One PC

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