After April 8, 2014 Windows XP will no longer be acceptable as part of your HIPAA compliant solution. Microsoft will no longer offer support for Windows XP. Security holes will no longer be patched leaving the operating system open to mal-ware attacks.
What can I do? Upgrade the operating system.
If the hardware is capable, upgrade to Windows 7 Professional or Windows 8 Professional. If the hardware is not powerful enough for the Microsoft upgrades, replace the computer. Wipe or better yet, shred the hard drive and recycle the old computer. Replace it with a new computer running Windows 7 Professional or Windows 8 Professional.