Stuck on GNU Grub version 2.12

Hi I am new to Linux and I am trying to set up a dual boot system with Windows 11. Im using a USB stick to install linux. Linux was booting yesterday but I keep getting this message everytime I try to boot Ubuntu.

Ive already disabled secure boot and prioritized Ubuntu in my boot setup.

I dont know what to do. Any help is appreciated!

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@Newb007 hello

You need to enter in a Linux live image environemnt and reinstall the bootloader, it seems bootloader was not installed properly…

I suggest you to continue using Grub for both Linux and Windows: you can put the Windows EFI inside the grub and you need to edit a grub configuration file for adding Windows entry in Grub, then update grub.
I suggest also to install Windows and Linux in separate drives, because Windows updates could break dual boot.

You can check the package OS prober, or you can follow this guide, which explain how to add the grub configuration.

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