You might want to check in the Bios and turn off the floppy disk option. Comp may be trying to boot from it. Also, I would check and see what the boot sequence is and what exactly the comp is set to boot from. Most probably something is not quite right in the Bios.
I was able to use pause to check the first screen after the logo & I could then see if my hd ans dvd was shoeing, etc. I then hit f12 to set the cd/dvd option to load win xp pro - I wabt to move up to xp x64 or win 7 soon as they ar 64 bit programs. hanks for help. Machine is working. Problem was a faulty interrupt start switch in case.