Skip navigation Sign in. Search How To Clean Up A Virus On Your Computer Do Not Attempt To Remove The Virus Or Shut Down Your Computer. Because This May Step 4: To Delete A Malware. How to Clean Up a Slow Performing Computer. This wikiHow teaches you how to clean out old files, programs, and settings which cause your computer to slow down. If your computer is still performing slowly after these steps, consider taking. Here are some tips to help you optimize Windows 7 for faster performance. Try the Performance troubleshooter. The first thing that you can try is the Performance troubleshooter, which can automatically find and fix problems. This video is unavailable. Watch Queue Queue. Watch Queue Queue Step. Clean out the dust from your laptop or desktop tower using a can of compressed air. Shut down your computer completely, open the tower to expose the internal hardware and use the can to blow out any dust from the inside. Cleaning your Computer Inside and Out. Matt Klein @howtogeek Updated April 30, 2019, 11:31pm EDT. Computer cleanup is the one thing you can do every day that will keep you flush with disk space and help you free up valuable system resources. Unwanted files can unnecessary use space on your computer, which reduces its efficiency and makes the computer slow to use. If we want to completely erase our old data, it can be done with the help of BitRaser data deletion software. Check out how to clean up your Windows desktop to speed up your computer and make better use of its operating memory.