My computer is not printing right, how do you clean the heads?

This method has always worked for me

Turn on the hot water until warm

Put about 1/2 inches of water in a cup

Put the print head portion (where the ink comes out) in for about a minute or two

This will help to dissolve the clogged print head

Dry off the cartridge using a soft tissue.

Re-insert the cartridge into the printer.

Run the normal cleaning software routine a few times

Computers don't print. Printers do.