McAfee Removal Connection Issues

Hi, I just bought a G5 5587 and I'm having a lot of trouble removing the McAfee antivirus it came with. Every time I uninstall it, I get connection problems. Certain websites will return a 'secure connection failed' error across multiple browsers, for example support.microsoft.com, I get the same error when trying to sign in to my battle.net account  on blizzard's website. I am also unable to log in to my Microsoft account in windows as it says I need to be connected to the internet. Plenty of other websites load and operate normally, and I don't encounter any of these problems as long as McAfee is installed. I've factory reset twice now and the problems arise as soon as McAfee is uninstalled, I've also tried using the McAfee consumer removal tool, flushing DNS, and resetting winsock, all windows network and system troubleshooting return no problems. Is there any way to get rid of this thing? It feels like this laptop shipped with ransomware, please help !