Over time, the speed of computers with Microsoft Windows can decrease. This appears as the system taking more time to respond to a user’s actions like opening files, folders, surfing the Internet and other tasks. However, there are things you can do to speed up your computer.
The following is a list of ways you can improve your computer’s performance. These steps are intended to be used in order. The key is to do the simplest and least invasive thing first until your system starts responding better.
Golden Rule: Do No Harm
If you want to improve the speed of your computer, that’s great. However, above all, do no harm and beyond the scope of this Windows forum, ask for help from those you know if you get in over your head. Remember: you have time. You can stop most processes I discuss without causing harm. Caution and common sense go a long way when working with computers; problems are often much easier to fix than they appear.
Steps to Speed Up Your Computer’s Performance
Above and beyond everything you can do with software to optimize the function of your computer, making sure you have the proper hardware to support Windows is critical.
Is your Windows Desktop dotted with files? Have you noticed that your computer has been running slower and slower? Do you see the hard drive light often flashing while you wait for the computer to respond to an action? There are steps you can take to fix it. Read this article.
An operating system is a collection of files that perform different functions. It is possible, over time, that one or more of these system files has changed or become corrupted. If this happens, the speed of your system may decrease. By using a utility called “System File Checking”, it will inspect these files and correct any problem it finds.
Every Windows computer is vulnerable to viruses. Viruses are nasty little programs that cause both major and minor problems for users.
Spyware and Adware are programs created by companies to find out more information about customers, so they can better market products to them. Usually these programs are not created for malicious purposes. Spyware and Adware can load into computer memory and slow it down.
Periodically scanning and removal of Viruses, Spyware and Adware is a great way to improve computer performance.
Over time, you may have accumulated programs on your computer that you do not use. When a program is installed, it creates connections between the program and the operating system. Even if you don’t use these programs, they can slow down your system. If you have the original program’s installation disk or file, removing programs will free up space on your computer and may speed up your system’s performance.
Windows provides a number of interesting visual effects including animated windows and fading menus. If you do not have enough operating memory (see above number 1), these effects can slow down your computer. Adjusting or reducing visual effects can make a difference.
To speed up Vista computers in particular you can disable features and function that are not used. For more information, read “How to Speed Up Windows Vista.”
Programs use operating memory (RAM, also called system resources). Unless you always use these programs, you can keep them from loading at Windows startup and speed both the booting of your computer and its performance.
The more information and programs you have on your computer, the more it is likely that Windows has placed parts of the same file in different locations on your hard drive. It may do this for hundreds of files and programs, depending on how much space is available. Defragmenting the hard drive places all information for each file in one place. The result can be a faster computer experience.
Important Note: Before you even try this, backup all your work onto a different computer, hard drive, CD or disk. Also, you should only do this if you have a reliable source of power for your computer. Doing this when there is a brown out or power problem in the neighborhood, is not a good idea. If a computer turns off while it is defragmenting a drive, it will create more problems than not defragmenting it in the first place.
If you have done all the above steps and your computer does not become more responsive, you might consider reinstalling the operating system and programs. This is a scorched earth option – basically you backup all your data and user settings, wipe your hard drive clean and re-install the operating system with your original disks. Next, install all your favorite programs and restore all your data and user settings.
The nice thing about doing this is that you essentially have a new computer, free of years worth of software and registry changes, additions and errors that can turn a fast rabbit of a Windows computer into a slow turtle. The bad thing about this choice is that it takes time and planning to do it correctly. If your PC is 3 to 4 years old and continues to run slower than it did when you purchased it, this might be the only action that will make a significant difference.
I recommend not reinstalling the operating system as this takes valuable hours out of your day(up to 4) unless your one of those bored types on weekends.
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Still Dont Understand? See these Instructions:
Free up disk space
By freeing disk space, you can improve the performance of your computer. The Disk Cleanup tool helps you free up space on your hard disk. The utility identifies files that you can safely delete, and then enables you to choose whether you want to delete some or all of the identified files.
Use Disk Cleanup to:
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Remove temporary Internet files.
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Remove downloaded program files (such as Microsoft ActiveX controls and Java applets).
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Empty the Recycle Bin.
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Remove Windows temporary files.
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Remove optional Windows components that you don’t use.
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Remove installed programs that you no longer use.
Tip: Typically, temporary Internet files take the most amount of space because the browser caches each page you visit for faster access later.
To use Disk Cleanup
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Click Start, point to All Programs, point to Accessories, point to System Tools, and then click Disk Cleanup. If several drives are available, you might be prompted to specify which drive you want to clean.

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In the Disk Cleanup for dialog box, scroll through the content of the Files to delete list.

Choose the files that you want to delete.
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Clear the check boxes for files that you don’t want to delete, and then click OK.
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When prompted to confirm that you want to delete the specified files, click Yes.
After a few minutes, the process completes and the Disk Cleanup dialog box closes, leaving your computer cleaner and performing better.
Speed up access to data
Disk fragmentation slows the overall performance of your system. When files are fragmented, the computer must search the hard disk when the file is opened to piece it back together. The response time can be significantly longer.
Disk Defragmenter is a Windows utility that consolidates fragmented files and folders on your computer’s hard disk so that each occupies a single space on the disk. With your files stored neatly end-to-end, without fragmentation, reading and writing to the disk speeds up.
When to run Disk Defragmenter
In addition to running Disk Defragmenter at regular intervals—monthly is optimal—there are other times you should run it too, such as when:
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You add a large number of files.
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Your free disk space totals 15 percent or less.
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You install new programs or a new version of Windows.

Click Analyze to start the Disk Defragmenter.
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In the Disk Defragmenter dialog box, click the drives that you want to defragment, and then click the Analyze button. After the disk is analyzed, a dialog box appears, letting you know whether you should defragment the analyzed drives.
Tip: You should analyze a volume before defragmenting it to get an estimate of how long the defragmentation process will take.
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To defragment the selected drive or drives, click the Defragment button. Note: In Windows Vista, there is no graphical user interface to demonstrate the progress—but your hard drive is still being defragmented.
After the defragmentation is complete, Disk Defragmenter displays the results.
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To display detailed information about the defragmented disk or partition, clickView Report.
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To close the View Report dialog box, click Close.
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To close the Disk Defragmenter utility, click the Close button on the title bar of the window.
3. Detect and repair disk errors
In addition to running Disk Cleanup and Disk Defragmenter to optimize the performance of your computer, you can check the integrity of the files stored on your hard disk by running the Error Checking utility.
As you use your hard drive, it can develop bad sectors. Bad sectors slow down hard disk performance and sometimes make data writing (such as file saving) difficult, or even impossible. The Error Checking utility scans the hard drive for bad sectors, and scans for file system errors to see whether certain files or folders are misplaced.
If you use your computer daily, you should run this utility once a week to help prevent data loss.
To run the Error Checking utility:
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Close all open files.
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Click Start, and then click My Computer.
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In the My Computer window, right-click the hard disk you want to search for bad sectors, and then click Properties.
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In the Properties dialog box, click the Tools tab.
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Click the Check Now button.
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In the Check Disk dialog box, select the Scan for and attempt recovery of bad sectors check box, and then click Start.
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If bad sectors are found, choose to fix them.
Tip: Only select the “Automatically fix file system errors” check box if you think that your disk contains bad sectors.
4. Protect your computer against spyware
Spyware collects personal information without letting you know and without asking for permission. From the Web sites you visit to usernames and passwords, spyware can put you and your confidential information at risk. In addition to privacy concerns, spyware can hamper your computer’s performance. To combat spyware, you might want to consider using Microsoft Windows Defender, which is included in Windows Vista, and is available as a free download for Microsoft XP SP2. Alternatively, there are other free anti-spyware software programs available.
5. Learn all about ReadyBoost
If you’re using Windows Vista, you can use ReadyBoost to speed up your system. A new concept in adding memory to a system, it allows you to use non-volatile flash memory—like a USB flash drive or a memory card—to improve performance without having to add additional memory. Learn more.