Question Reboot doesn't work properly / F12 black screen

Jul 28, 2025
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Hi everyone,

I have a custom-built PC running both openSUSE Tumbleweed and Windows 11.

I'm experiencing an issue when trying to restart from openSUSE into Windows 11. Upon restarting, I don't see the usual boot up screen that shows the F12: Boot Menu and Del: BIOS Setup options. Instead, the system immediately boots into openSUSE without showing its boot menu either.

If I press F12 before openSUSE starts loading, I just get a black screen and nothing happens.

However, if I shut down the PC completely and after a few seconds power it back on, I do see the expected screen with the F12 and Del options.

I've checked the BIOS settings, and everything appears to be in order.

So my question is: Why doesn't the boot up menu screen appear after a restart, but only after a full shutdown and cold boot?

Any help or insights would be appreciated!

My PC spec:
Gigabite B650M AORUS ELITE AX,
AMD Ryzen 5 7600X
AMD Radeon RX 590
Crucial Pro DDR5 RAM 32GB Kit (2x16GB)
Crucial T500 500GB SSD PCIe Gen4 NVMe M.2
2x Samsung SSD
MSI MAG A750GL PSU