Screen slowly flashing grey and black

  fyuiom 14:18 13 Apr 2017
Locked

Hello so i was editing some settings in regedit and saw that a game was not lauching then i thought that i should restart my computer i did and then i saw the windows 10 logo with loading thing under it once it loaded i just see grey and black flashing then i tried using safe mode by turning my computer off at the windows loading screen and it prompted me with pc repair but at the repair screen both my keyboard and mouse dont work/LEDs are off so i cant do anything there do you guys have any suggestions? thanks

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