I dont bother with virus/ microsoft or even warranty xD , this pc was on sale for 600, it wasnt bad 4 years ago, but its getting outdated now.
most of that anti virus **** you buy is useless and takes up alot of cpu usage and stuff, microsoft I could torrent for free and warranty they gave me a 3 year free warrenty and my pc had one problem like 2 weeks after from an actually physical problem with the pc, so they gave me a 3 year geek squad and replaced my pc for a nonbroken one XD and I havent needed to bring it back since, and most of the time if something is really ****ed up you could rbeoot it for like 40$ to buy the disk or something