Sometimes when I switch on the Computer when the Windows screen appears (prior to password log on) it rolls - similar to your t.v. when it needs to be re-set. Not knowing what to do I just leave it and it settles within a matter of 10/15 seconds. It does not occur every time but I am certain it should not do it even once in a lifetime!
The Monitor is only 6 months old. As I originally said, it happens when I first boot up log on or whatever you call it (I am learning!!). Sometimes it rolls othertimes it doesn't. For example this time around it rolled about 10 times then off it goes.
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