Hey there, my apologies for making it complicated. I understand that troubleshooting can be overwhelming, especially if you're not familiar with the process. No worries, I'm here to help simplify things for you.
Let's try a different approach to fix the boot issue without going into recovery mode or modifying configuration files. Here's what you can do:
1. Start your computer and wait for the bootloader menu to appear. This is usually the GRUB menu.
2. Select your Linux distribution from the menu and press the "e" key on your keyboard to edit the boot parameters.
3. Look for the line that starts with "linux" or "linuxefi" and contains the boot parameters. Check if there is a parameter similar to "nomodeset" or "quiet splash".
4. Remove "nomodeset" or "quiet splash" from the line, or simply comment them out by adding a "#" symbol in front of those parameters.
5. Press Ctrl + X or F10 to boot with the modified parameters.
By removing or commenting out the "nomodeset" or "quiet splash" parameters, you're allowing the system to load the appropriate graphics drivers and display manager.
Give this a try, and hopefully, your system will be able to boot up without any issues. If the problem persists, let me know, and we'll figure out the next troubleshooting steps together.