As many computer users complain their Windows is slow or their Windows hang up often, here are some tips for these problems.

Spyware and virus could also be one of the reasons of a slow PC . Once surfing the web, you will eventually encounter virus and spyware that would attack your PC. Staying out of the internet is not an option instead, you have to make sure that your computer is installed with a virus or spyware scanner in order to prevent any virus attack. Disk fragments grow when system is used for some time. Too many fragments not only bring down the system performance or cause file loss, but also shorten the life of the hard disk. According to Microsoft official document, the more fragments are in the volume, the lower the system input/output performance will be. We can put it this way: Too many disk fragments cause the magnetic head to continually search and read data of the same file from different places, which can bring down the system efficiency and speed. As time goes on, the hard disk life will also be shortened. As stated above, it is necessary for us to analyze and sort out the disk fragments regularly Junk files on the hard disks grow gradually with the installation, deletion and uninstallation of all kinds of applications, which will lower the working efficiency of the computer by occupying large space and hindering the speed of Windows. Registry is a hierarchic tree like structure of database system which not only supports Windows system, hard disk and applications but also saves settings. It keeps the record of user's hardware configuration and software information. When you delete an application, you might forget to delete its related information, which can result in redundancy accumulation in registry and lower the speed of registry and system. Therefore, it is necessary to clean registry regularly.

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