Shaffer2000,
Welcome to the HP Forum.
I suggest that if you cannot get the printer to power on that you call HP Support and see what they say about the problem. The printer may have suffered a hardware failure or there may be something the technician can offer in the form of a Reset option that was not covered in your printer's manual.
The printer is covered under a hardware warranty -- you can take advantage of that coverage and ask for help.
Reference
HP ENVY 4502 e-All-in-One Printer
The Forum is not a direct conduit to Tech Support so you do have contact HP -- if you are in the USA or Canada you can try the Chat line, if you like.
Contact HP – USA - Phone Assistance
Warranty Required – USA and Canada
USA – Contact HP // Self-Help – Email - Chat
Click the KudosThumbs-Up to say Thank You for the help.
Although I strive to reflect HP's best practices, I do not work for HP.