Screen colouring event previously unseen by me

  RobJenk 11:44 21 Feb 16

Last night I closed the lid on my HP Pavilion Entertainment laptop as usual, but this morning when I opened up, the screen had a glare on it making the screen very difficult to make out, and there was a black line about an inch wide running down the middle of it. I rebooted and everything was normal. But I'm wondering if this was a warning of something. (By the way, my OS is Windows 7, now more or less recovered after all sorts of problems arising from a failed upgrade to Windows 10.) Thanks in advance for any help.

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