I agree with everyone here. Windows XP is dead since 2014; Freedom Scientific (now part of VFO) stopped supporting XP since Jaws 16. Microsoft Office dropped Windows XP support since Office 2013, which is released more than a full year before end of life for Windows XP.
You can get Windows 10 for free since you're a NVDA user, and if you need a new computer, there's second-hand computers that comes with Windows 7 (more recent ones should have SP1 installed) cheaply.