Windows XP | MobilePCMedics.comDespite being introduced all the way back in 2001, Microsoft XP is still the second-most used operating system in the world, with XP accounting for nearly 28 percent of worldwide computer users. While XP continues to be very popular, Microsoft will soon be ending its support of the operating system within the week. XP users may have to rely on computer repair companies even more now that Microsoft will not be offering a support system for it.

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