Welcome to SAF, troubled.
QUOTE
after about that first hour out of nowhere the autoprotect just disabled for apparently no reason
That can be caused by a number of viruses, particularly rootkits that can hide from normal detection methods. Can you download and run
SilentRunners, then post the log it generates.
BTW, Norton may protest at running a VBS file. Just OK it. Also, wait for the prompt that SilentRunners has finished scanning, otherwise the log will be incomplete.