Thanks to all who responded. It was the power supply that was bad but another I encountered another problem when I booted the system. An error came up in the boot sequence 'resource conflict in network controller slot 3'. The system would halt there..just a black screen. I could get in on safe mode every time and about 1 out of 10 times it would boot normally. I narrowed it down to the networking card. I did a search on the problem and tried several different things including disabling the network card, checking the device manager for duplicates etc and couldn't resolve the problem. I removed the card from the system and everything worked fine. Since the customer doesn't need this card I left it out and they are satisfied and took it home but I'm interested in any thoughts anyone might have. Thanks for your help. Carol Burnside --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.449 / Virus Database: 251 - Release Date: 1/27/2003 Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com