I recently had the unfortunate experience (I mentioned it in another post or two) of my USB functionality getting whacked somehow on my XP machine. As a result, I couldn’t use my mouse and keyboard AT ALL.
Fortunately I have PS/2 ports on the computer, and fortunately I have an extra PS/2 mouse and keyboard at the house, so I was able to connect them and then fix the problem.
If you don’t have PS/2 ports on your computer, you may want to consider installing them, for just such occasions. Here is a card which will work in low-profile cases:
http://www.outletpc.com/xw9361.html
Even if you don’t install the card, you might want to have such a card, as well as a PS/2 keyboard and mouse, handy for such occasions.
In such a situation, without PS/2, it’s as if you have lost your encryption password and therefore none of your files are available. But with it, you hardly skip a beat.
with Windows 10 running in a remote session on my file server