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How old is the HP Envy in question?
Has it worked for photocopying or scanning, before this?
Has the printer been moved around a lot? or at all (since it was first unboxed and set up) ?
With a 4 or 5 years-old HP printer, the answer may well be - if it hasn't been moved/shipped - that the scanner isn't working.
Open the scanner lid, with no document present.
Order a photocopy be made.
What do you see? any light? the bar inside the glass moving perhaps but not lighting up? the bar inside not moving at all but lighting up? the bar inside neither moving nor lighting up?