Getting Error 5100 on PIXMA TR4722 printer

[Scott9961]

I recently put in new cartridges both color and b/w into my Pixma TR4722 Canon Printer.  I am getting Error 5501. I go into the cartridge area and pull them out one at a time and put them back in. I then turn the printer off for a few minutes and turn back on and it goes right back to the error. I am losing time on fixing this problem and I am about to throw it off a roof and buy a different brand. Printers should not be this difficult to work with.  What am I doing wrong?

[Scott9961]

Oops my mistake.  It is not 5501.  It is 5100.  I've tried what the FAQ suggests but after unplugging the printer for a half-hour. It does not clear it out.  Any suggestions? or is this something I will have to take the printer in for a fix?

[royalmorning · Accepted solution]

Did you make sure to press down the blue buttons on top of the cartridges? 

[Scott9961]

Blue buttons? the error code was5100, not 5501.  I get my numbers backward.  I will check this "blue button" thing you speak of.

[Scott9961]

No blue buttons on the cartridges. The gates to keep the cartridges in place are blue, but no blue buttons.