Destroy adware. Windows users generally rely on a free program called
Spybot Search & Destroy; Mac users can use
MacScan, but will have to pay a small licensing fee of $39.99 if they want to use it for more than a month. Whichever you choose, download the program, install it, and run it to find, catalog, and delete the offending programs from your computer. Once you have the programs, their steps are very straightforward.
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Get rid of viruses. Viruses, worms, and other more directly harmful computer problems are best handled by a powerful antivirus program. Viruses and their ilk don't often contribute directly to a slower Internet connection, but they should always be prevented whenever possible and purged as soon as they sneak onto your computer. To check for and contain viruses, download an antivirus program and install it, then run it immediately.
- You don't always have to pay for quality. Some of the world's best antivirus programs are actually free for home use. Windows users can download Avast! Antivirus or AVG for free; Mac users can download Sophos, a Mac-native antivirus program. All of these programs are clean, legitimate, and widely used.
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Free up space. Sometimes, an older or smaller computer will begin to slow down due to the sheer amount of temporary Internet data or extra programs and files it's accrued over the years. This generally isn't a problem for any computer made in the last several years, but it never hurts to do a little spring cleaning. Start by deleting your temporary Internet data. This is usually pretty simple; guides for whatever browser you use can be found with a quick Google search. Afterward, go through your programs and remove those you no longer use or want.
- Mac users can simply scan through the Applications folder and drag unwanted programs to the Trash. (Be sure to empty the Trash when you're finished). Windows users should go to the Control Panel and find the Programs panel (also called Add/Remove Programs, or Programs and Features, depending on your edition of Windows), and remove programs from there by highlighting unwanted items and clicking “Uninstall.”
- Allow your antivirus program to run continuously in the background. It will catch threats you didn't see coming – sometimes more often than you might suspect.