OK....just to update this issue.
we reinstalled the machine due to the original crash, partitioned the mirrored 1TB drives.... 100g for the system 900g for the data one as not to have to copy 600 gigs of music data again...if it crashed. Made sure all updates were applied. The machine ran flawlessly for..a month ...until user downloads version 12 jukebox. Machine works....then next day has become unresponsive...user hard starts the machine(same as last time)...the machine will not boot into XP SP3 all updates and of course is then brought back to me.
The machine is in a restart loop....goes to load xp and restarts, try safe mode with networking...same problem. Try Safe mode not network...it boots.
Uninstall jriver jukebox 12 and restart into regular mode........voila system is back to normal.
If this is a hardware issue...........there is obviously some issue with this hardware, chipset, drivers and or all of it
Gigabyte EG45M-DS2H MB
Intel Core 2 Duo Eb400 3.0 GHz 1333 MHz FSB
4g Kingston PC 6400 DDR2 Ram
2x WD Caviar Green 1TB, 7200 SATA
Lynx AES16e PCI-Express.
as stated once your software was removed......the machine again was back to normal.
Other media software on the machine Itunes, and media monkey.
Just for your information......
M