If your system is having an issue during the boot process you can change the screen logging level to Verbose to allow for further troubleshooting.
- Boot with rescue mode
You need to press "Tab" button at the screen where you choose 32/64 bit mode or RUN SOFTWARE INSTALLER :
2. To verify what causes the freeze during boot up, modify the line that contains :
splash = silent
you need to change to :
Then hit ENTER to boot up. The result should look like this :