I've had the same problem trying to keep a Dell 1700n alive. I'm sure I managed to get the Win7 driver to install once using Vista compatibility mode (I know that sounds weird). Anyway, on my latest 64-bit Windows 10 (HP laptop) I cannot get it to work.
So I went down the Lexmark route. As per the other answer, go to the Lexmark site. Select Lexmark E332N, Windows, 64-bit, English (or your language). Install both the IP Setup Utility, and the Universal Print Driver Installation Package. When the installer asks you to identify your printer, choose network, XL driver, supply the printer IP address, and make up a port name, e.g. Dell1700n. Printer will appear as Lexmark Universal V2 XL.
Working perfectly for me, and the dinosaur Dell lives on once again. Must be 15 years old. Apart from toner cartridges, and one change of print drum, the only glitch I've ever had was the paper feed deteriorating until it jammed constantly. Locate the feed roller with what looks like a rubber band. It goes glossy with age but turn it inside out and all perfect again.