I had Bitdefender Total Security on my Windows 8 PC and it seemed to be working fine for over a year. Until one day..........Then all hell broke loose and I became entrapped in the dreaded Rescue Mode. From there, everything was tried from reconfiguring boot mode to complete resetting the PC BIOS. It was scary. What did not help was that the Bitdefender 24/7 (theoretically) operations are based on Romania and their Level 2 and 3 techs who know how to get things done operate in their normal business hours which means you are in deep trouble in North America or definitely on weekends when they usually do not get back to you until the next business day. And you what that means....Given this, if you need some good forward protection or have simple issues - like updating, virus detection and removal, help on how to address basic problems, etc., Bitdefender is good. However, if serious problems occur where your core computing like BIOS or hardware components are involve, be prepared to be absorbed or do without your PC for a long time.