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Fix slow computer problems

It is important to run your computer at peak performance. Over time, regular use of your computer builds up unneeded files and fragments your hard disk. Bad computer habits also contribute to computer slowness. Using multiple programs at once, putting the computer to sleep instead of regularly restarting, browsing the Internet with multiple browser windows, adding plug-ins and services, and neglecting to perform regular maintenance. These all can add up to poor computer performance.

Here are some best practices to keep your computer running at its best:

  • Restart your computer at least once a day

  • Have minimal programs load at startup

  • Do not run multiple security programs together

  • Remove unwanted browser plug-ins

  • Delete temporary and unwanted files

  • Run Windows Updates at regular intervals or enable automatic updates

  • Update all your programs regularly

  • Continually defragment your hard disk

Norton can help with many of these. Follow these steps to have Norton optimize your computer.


Manage startup items

    You may have many programs loading at startup that can slow down the startup process. With Norton's Startup Manager feature, we can help you manage your startup programs and reduce the startup time

  1. Start Norton.

    If you see the My Norton window, next to Device Security, click Open.

  2. In the Norton window, double-click Performance, and then click Startup Manager.

  3. In the Startup Manager window, under Delay Start, select the program that you want to delay.

    If you are not sure which programs to delay, review the result under Resource Usage. If a program has high resource usage, we recommend that you add it to Delay Start.

  4. Click Apply, and then click Close.


Defragment your computer's hard disk

    Over time, your hard disk becomes fragmented. Optimizing your computer's permanent disks can improve performance and reliability. Norton automatically checks your permanent disks for fragmentation and optimizes them if they are more than 10 percent fragmented.

  1. Start Norton.

    If you see the My Norton window, next to Device Security, click Open.

  2. In the main window, double-click Performance, and then click Optimize Disk.

  3. When the activity is complete, click Close.


Remove temporary and unwanted files

    Norton File Cleanup removes the temporary files for Internet Explorer and Mozilla Firefox and unwanted files from the Windows Temporary folder. Over time, temporary files can slow down Internet browsing and computer performance.

  1. Start Norton.

    If you see the My Norton window, next to Device Security, click Open.

  2. In the Norton window, double-click Performance, and then click File Cleanup.

  3. After the temporary files are removed, click Close.

    To remove temporary Internet files on Google Chrome, continue to the next line. If you do not have Google Chrome installed, skip to Step 4.

  4. To open the Clear browsing data window on Google Chrome, press the Ctrl + Shift + Del keys on your keyboard.

  5. In the Clear browsing data window, at the top, from the drop-down menu, select the beginning of time.

  6. The options are selected by default in the window. Click Clear browsing data.


Uninstall any non-Norton security product

    Each security software is designed to work independently on a computer. Multiple security solutions on a computer are generally not optimized to work together, resulting in performance degradation.

  1. Press the Windows + R keys to open the Run dialog box.

  2. Type in the following text, and then press Enter.


  3. In the list of currently installed programs, select the non-Norton security product, and then click Uninstall or Remove.

  4. Follow the on-screen instructions.

  5. When the uninstall completes, restart the computer.

    You can also read the program documentation or contact the program manufacturer for instructions to remove a non-Norton security product from your computer.

If your computer is still slow after following all these steps, select one of the following that best describes your situation:

Wondering why your PC runs slow? With the Norton Computer Tune Up service, our experts help to optimize your PC settings to improve startup speed and restores like-new performance to your older computer.

Learn more


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DOCID: v59066932
Operating System: Windows
Last modified: 08/05/2019