I've had the boot time scan set to "aggresive" forever, but now, i think it is causing my pc to hang at the "starting windows" screen. I've narrowed it down to the tp-link usb wifi adapter that i just installed. Never had an issue with booting till right after this install. Is it safe to leave that scan set to off? i do quick scans once a day and full scans every sunday before backup the system so i'm thinking it'll be ok. thanks for any tips. i've updated that tp-link drivers. Can't figure whats causing the conflict.