have you checked the boot sequence in the BIOS
Yes, first SSD I installed is listed in BIOS as primary boot device. DVD drive is listed as secondary.
All was well untill I installed DOOM3. I have uninstalled DOOM3 and edited the registry to remove all references to DOOM3. Do not know if I created the problem when I installed DOOM3 or that is coincidental.
Thank you for your time.