First, try installing the cartridges step by step according to Brother.
Second, if that doesn't work, try a different set.
Third, buy a new printer.
I recently replaced with genuine Brother ink, the ink cartridges in my Brother MFC 5440CN. But the LCD still reads Black nearly empty, Cyan nearly empty..etc. The Brother website said the LCD will say "install new ink", but it didn't even say that. I popped out and put the cartridges back in, a couple of times, which I heard isn't a good idea. And as you would know it, my warranty ran out in October. Any ideas??