How to resolve the issue of Ubuntu getting stuck after installation and restart.

If Ubuntu gets stuck during reboot after installation, you can try the following methods to resolve the issue:

1. Force shutdown: hold down the power button for several seconds until the computer completely powers off. Then restart the computer, which may solve the issue.
2. Enter recovery mode: press the Shift key during startup to access the GRUB menu, select recovery mode, and then attempt to fix the system issues.
3. Check for errors during the installation process: Reinstall Ubuntu to ensure there are no errors or warning messages during the installation process.
4. Check hardware issues: Verify the normal functioning of hardware devices such as memory and hard drive, which could potentially cause the system to freeze during startup.
5. Upgrade the system: If the system has been successfully installed, try updating the system and drivers, which may fix some bugs causing the system to freeze.

If the above methods cannot solve the problem, it is recommended to contact Ubuntu’s official technical support or seek help on community forums.