Windows 10 upgrade: blank screen appears

  RichardNewlands 15:32 15 Aug 2015
Locked

My girlfriend and I both have Medion laptops and we've both just upgraded to Windows 10. My upgrade was successful, although at first it wouldn't wake up from sleep (showed only a blank screen with the hard-drive ticking) and wouldn't boot from cold every time. Windows updates fixed the problem. My girlfriend got windows 10 running okay only once, but when she cold-booted today, the computer tried to self-repair, failed, and now she gets only a blank screen as I did, with the hard-drive spinning. What should we try next?

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