Hi, When I start Macbook Pro 2010, system starts to load with a grey progress bar and at approx. 50% laptop shuts down. I've tried to load Recovery but key combination doesn't work.. In fact, none of the key combinations work. Then I tried with a different keyboard (wired Pro Keyboard), but the result is the same. External keyboard works 100%, and Macbook powers it via USB (Caps Lock and Num Lock are lit).
Thank you in advance.
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