Fix Ubuntu Boot Failure After Reinstall

If you are unable to access the system after reinstalling Ubuntu, you can try the following solutions:

1. Check the boot sequence: During computer startup, press the corresponding key (usually F2, F12, Del, or Esc) to enter the BIOS settings interface, and make sure the boot sequence is set correctly to start from the hard drive.
2. Restore the GRUB bootloader: If you have a dual system (such as Windows and Ubuntu), it may be due to the GRUB bootloader not being correctly installed or configured. You can use a boot disk or Live CD to restore GRUB. For detailed steps, refer to the official Ubuntu documentation or other related tutorials.
3. Check for hardware malfunctions: After reinstalling the system, if you are unable to enter the system, it may be due to hardware issues. You can examine whether the hard drive is properly connected, check for malfunctions, and ensure that other hardware is functioning correctly.
4. Reinstalling the system: If the above methods do not work, you can try reinstalling the Ubuntu system. Make sure to select the correct partitions and boot settings during the installation process.

If you are unfamiliar with the above methods or encounter other issues, it is recommended that you seek advice from professional technicians or seek relevant technical support.