New
#21
The computer is more stable, me, not so much. :)
It ran all day today unattended, logged on to Steam. No problems. I guess getting the correct mobo drivers for the LAN and/or disabling the onboard LAN did the trick unless it was some kind of 'burn in' issue (never happened to me before, I've built a lot of machines) but each has it's own challenges. I'll set up the new adapter when I get around to it, or if things go south again, but I think I'm out of the woods for now. CASE CLOSED. Thanks to all for your support.