ok. i got back from my trip. i managed to get windows defender offline to run a full scan. nothing found.
i ran memtest overnight. it completed 12 passes. still no luck.
i'm doing this now:
4. Once the System is clean if it won't start boot into System Recovery Options via the F8 menu or disk as shown in tutorial, run Startup Repair repeatedly up to 3 separate times with reboots in between each - no matter what it reports.
5. If you need an installer for your licensed version to boot to run Repairs or possible Clean Reinstall, download the latest official Win7 installer w/SP1 ISO, burn to DVD or write to flash stick using Windows 7 USB-DVD Download Tool.
i'm Downloading the win7 .iso