The unit works fine with my Win.7, but every time I go to use it....at some time during the session it will start to do a "checking device." It takes quite a few minutes and drives me nuts because it will happen even during a printing session but usually will wait until there's a pause between print demands. Then it will sit and pop, snap, grunt, groan, rattle back and forth...then finally a "ding dong" and it's done. It usually requires me to start over if it happens during a print session.
Also, if I'm printing strictly black/white why does this fool thing not let me start if one of the other cartridges is low. It doesn't need yellow or magenta or whatever to print black/white. Poor engineering design. I should be able to actually remove the other cartridges and still print black/white....which is 98% of my printing.