As suggested the problem proved to be a bad RAM module. Many thanks for the help and suggestions and particularly for the heads- up regarding the Ultimate Boot CD. A most useful item. Regards, Jim -- *** e-mail is not a secure channel *** mailto:byrnejb.<token>@harte-lyne.ca James B. Byrne Harte & Lyne Limited vox: +1 905 561 1241 9 Brockley Drive fax: +1 905 561 0757 Hamilton, Ontario <token> = hal Canada L8E 3C3