The Microsoft Windows 7 Professional SP1 64-bit operating system is ideal for not only new but also used computers irrespective of their brands. It is perfect for budding working professionals. It comes with automatic back-ups which ensure that your work is safe while you are involved in any location or network. This software helps you to connect quickly and easily to your favorite networks, projectors and printers. Not to mention it also demonstrates presentations while providing you with confidential information on PCS with more than one user. The Windows XP mode of this software makes it compatible to use with older programs of business. In addition, you can get an amazing entertainment experience by using Windows media center which gives you some very attractive features like live Internet. Moreover, you can always turn off notifications and screen savers and can even change the background of the desktop with just a single click. This helps to give a more professional look to your presentations. The best thing about this OEM software is that it supports new, used, branded and non-branded laptops and PCs.