One of the best old operating system from the Windows is Windows XP .It is too old operating system but also very efficient and reliable for any PC and computer. Mostly in the market we see Windows XP installed in computers. Windows XP features that it contains a limited amount of operation and features so this is not create any type of difficulty to operate the computer. An issue with Windows XP that it is not compatible with Samsung Galaxy Android phone respect to its mass storage.Its required and additional Samsung Kies software which create difficulty to connect mobile storage to the laptop for PC also displayed is not up to the mark. Windows 7 and Windows 10 is much greater than Windows XP because that operating system is upgrade version of Windows XP. You must use so I recommend to use Windows 10 because it is very fast and easy to update