Hsp90 inhibitor AUY922 and Tarceva hydrochloride may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. This phase I/II trial is studying the side effects and best dose of Hsp90 inhibitor AUY922 when given together with Tarceva hydrochloride and to see how well it works in treating patients with stage IIIB-IV non-small cell lung cancer.
