RE: Dell Inspiron 15 3558 SLOW
ejn63 wrote:If the system shipped with McAfee/Intel Internet Security, getting rid of that in favor of the MS defender is another big performance booster.
I'm 100% in agreement with ejn63. McAfee/Internet Security and other top antivirus software take your money and at the same time slow down your system. All of them have their components in the Startups, Registry and web browser which slow down the system. I'd suggest you use the antivirus software (Windows Defender) which already is on the system. It's free, good for fighting viruses and most importantly it won't slow down the system.