Why is may printer l not turning on after not using it for a month?

Good morning, my name is Steve. Have you tried another wall socket? If you are using a power strip, unplug the printer from it and plug directly into the wall. Check connection that is plugged into the back of unit. Sometimes a little nudge can cause the problem. I do not know how long you have owned this printer, but if it is out of warranty, Canon will sell you a "refurbished' like=item" for very much less. Also it would not hurt to get extended warranty for the next printer, whom-ever you purchase your next printer. Like Canon, they have given the inkjet printer a new name....useful life.Remember the printer manufacturing companies came up with a solution to "color-based" printing needs and these smaller,convenient solutions were created to market the ink. Sorry about the bad news. Think about how much you use the color printing. If you use it quite a bit 2-3 times a month. Or if you have children who use it for school projects, the dry-ink printer (laser) have considerably come down in price. Just something to consider. The wet inkjet type printers do not have user replacement parts other than a power cord or different type of photo paper. Sorry I could not give you any better solutions.Let me know if you have any other questions,I'll be happy to answer them, Best regards,Steve