Hi Daniel That Cyrix computer belongs to my friend but she's quite happy with it now. As long as you think I haven't done any harm by underclocking, that's all I was worried about. Thanks. John, I didn't see any Multiplier on the motherboard. Instead it listed a "ratio" so I tried different settings and found 3x = PR166+ and 5x = PR90+. I chose 90+ coz nothing else worked. As for the voltage I just went for the lowest that still worked. I guess I was lucky not to have messed things up. Cathy Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com