i don't think the issue was ever with win 7. more so with win10. but it's good to know it works as so.Up six plus days straight on Windows 7 Ult without a hick-up. System is serious overkill, stable, fast, runs the needed software. I'm satisfied.
honestly, it's almost crazy that we expect that things made over 5 yrs ago to keep working with whatever the latest o/s is sometimes