Can you add some detail please;
1) what model of laptop do you have?
2) When you say it's bricked twice - that's confusing, do you mean you've permenantly unrecoverably bricked two laptops, or do you mean you somehow recovered them?
3) What version of Ubuntu did you install at (1) ?
4) The boot at (2) was that a normal boot after the installation?
5) In (3) did it upgrade to a new version of Ubuntu (which?)
6) Had you ever selecting the EFI boot options?