Are you sure? Are you running Windows Defender or another antivirus right now? My computer also came with McAfee, and I "deleted" it, and all it did was remove itself from the list of programs that were visible in the control panel. I still couldn't run Windows Defender and couldn't figure out why. I had to get Microsoft tech support on the phone, and they remoted into my computer and went into some deep, dark places and suddenly found all these other folders with "McAfee" this and that for names. Pissed me off like nothing in a while.