My Lexmark X2350 is an all in one printer, aka it has a scanner, but when i push the scan button on it and nothing happens, so i try to set it up in Windows, but it only lets me choose if the scanner is on a Printer Port, or Com Port but no USB. It is attached via USB, and i dont know what to do, please help!

Why don't you try to re-install the drivers? If you have already done this, i think there must be problem in the printer itself, that is the electronic part.