I too have faced the dreaded
Blue Screen Of Death! I
do believe this has contributed to a great many Windows 8 users dissatisfactions,
& their early mistrust
of a beautiful new OS that did not work as hoped.
Shortly after joining, back in December 2013, I'd learned from the GREAT
Exterminator20 that Bitdefender Free was frustratingly incompatible with Windows 8.1, as I was blaming poor innocent Zemana Antilogger.
Since then, I've read this is no longer the case, but I've not had the opportunity to reclaim my old confidence in their AV product (yet). Comodo was an early AV/Firewall consideration, but I never did try it. I have, ever since resurrecting our Windows 8/8.1, only used it's "native" built-in Windows AV (Defender) & Windows Firewall from the much appreciated knowledge gleaned from the advice of both experienced helpful Staff & many wizened member "wizards" whom know what it feels like. Yay for your working system & cheers to MalwareTips ..just because!!!