PC not booting after windows 11 update

[Windows 11]

Hi,I have an issue with windows 11. After a recent OS update, I had to choose between two systems: windows volume 3 and...windows volume 3. I randomly picked one, and since then I cannot start my laptop again. When pressing the start up button, the screen becomes slightly clearer, but then it suddenly switches off, and ends up in an uninterrupted on/off loop, switching every 10 seconds.I checked the BIOS, and I see "windows" as the (only) boot manager. However, I cannot see the hard drive. I tried to boot the computer using a bootable USB. It did work and I could access the troubleshooting set

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