MacBookPro from mid 2009 freezes before a system load

[cscs]

@FranekW

The computer starts but then freezes just when GRUB should work and shows only back screen with a cursor. Nothing else happens. When I try to boot it from USB, I can select to boot from the USB, but then the effect is the same-it freezes showing only the cursor and does nothing. It seems to stop at the same point.

For clarification .. can you drop to TTY ?

Have you tried booting into runlevel 3 ?

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