Starting April 8, 2014 Microsoft will be cutting all of windows XP support meaning there will be no more security updates to keep your system running fast and safe. If you continue to use Windows XP now that support has ended, your computer will still work but it will become more vulnerable to security risks and viruses. Internet Explorer 8 is also no longer supported, so if your Windows XP PC is connected to the Internet and you use Internet Explorer 8 to surf the web, you might be exposing your PC to additional threats. Also, as more software and hardware manufacturers continue to optimize for more recent versions of Windows, you can expect to encounter more apps and devices that do not work with Windows XP.
If you are a physician just having a Windows XP computer on your network will be an automatic HIPAA violation which makes you non-compliant with Meaningful Use and could easily cause a reportable and expensive breach of protected patient information. HIPAA fines and loss of Meaningful Use money can far outweigh the expense of replacing your old computers.
It is highly recommended to anyone still running Windows XP to upgrade their operating system to Windows 7 or 8 as soon as possible to ensure your system is protecting all your files properly. Along with upgrading your operating system, if you are running an older computer, you can replace the desktop with a newer model that will be preloaded with Windows 7 or 8 thus making your experience on the computer a much more enjoyable one.