I have now changed motherboards, the one I thought was causing the problem had onboard video.
The new system is the Asus P4P800SE, a Radian 7000 Graphics card, Windows XP, home, service pack 2, giga 3.1 (latest) Frontier Wavecenter PCI sound card with latest drivers, 2 GB ram.
When I copy and paste instruments from one gig file to another, after a few minutes Windows crashes. I have tried different memory sticks as well. Is there anyone in the San Francisco Bay Area that could help me with this, I will pay someone if they're really an expert at troubleshooting Giga/PC audio systems.
I am using SATA drives, thinking that might be the problem, but I notice many people are using SATA drives in stable systems with Giga. Is there a large-file transfer problem with WinXP or with SATA or with my settings? I follow all the usual Giga/pro audio guidelines for configuring Windows. I ran Giga 2.54 successfully for 3 years.
Any help would be appreciated.