Thanks for all of your help. Great to have someone to work with. However, no change. After following your scenario to the letter, pc still slow to boot, programs slow opening (some). For instance, when creating the HJT log below, it took 20 minutes before things settled down. IEXPLORER in Task Manager Processes several places, CPU load 60-80%, modem constantly active. In fact, after the initial reboot following your plan, I had to cold reboot after 1 hour wait of partial boot that had 80 processes in Task Manager, 65 of which were IEXPLORER. After that cold reboot, it was back to where it has been since this trouble started. Here are some results from your suggested cleanup:
Safe Mode Reboot
1. Neither Norton (nava) nor Microsoft Media (winmplayers) appeared in “services.msc”
(Had to wait about 20 minutes for “services.msc” to load. Same multiple IEXPLORER, high CPU, active modem, even in Safe Mode)
2. None of the four listed programs ever appeared in Windows Task Manager.
3. HJT, “Delete on Reboot”, double-clicked on “gvkbsrv.exe” and “kbarsrv.exe”. “Nava.exe” and “winmplayers.exe” were nowhere to be found.
4. HJT, Scan, checked:
R1 – HKCU\Software\……..ProxyOverride=…………;
R3 – URLSearchHook, neither one found.
O4 – All four as listed.
O6 – Not found.
HJT Log after the above: