Hello, when the boot fails, I get a black screen, usually when I don't press 
any key. Sometimes it starts without pressing any keys during boot. Regarding 
the esc button, the boot also worked.
But following the steps I gave previously, the boot works fine.

When the Lenovo logo appears on the screen, the boot is successful, when
it does not appear, the screen remains frozen black.

Is there a command to run in the terminal? So I'll send you whatever
report you need.

Very technical things I don't understand much, I'm a regular user 😄

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https://bugs.launchpad.net/bugs/2067176

Title:
  Boot and memory test errors in grub

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