Display suddenly changed I have tried changing in utilities but nothing works.  The print is enormous and out of focus the screen has shrunk in width but programs open too stretched in length? What can I do?

The display suddently changed two days ago.  Everthing exploded in size.  I have tried changing the contrast but nothing works.  The display screen becomes either too wide, too long, or too narrow and in all cases the font is extra large and out of focus.  What can I do please   I am really disappointed since my iMac is only 2.5 months old.

Don't think so.  But tried it anyway.  I have been into utilities and tried different contrast settings now I don't know what is the right one.  But no matter which one I tried I have either about a third of the screen black, with display centered as though hidden behind the black.  What is going on?
Also, I have to say that I can't understand why there is no information anywhere on what the correct settings should be.
Any ideas Capt?

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