I would not call this risky.
I have an older Compaq with an AMD processor. Someone told me to download the HP fix for AMD before installing SP3. I found the fix and I think I installed it. It was in the morning before work and my ride came. I left without verifying or making sure it was installed. I figured I could finish when I returned. There is nothing I can find that tells me if it's installed. I tried HP support and he referred me to an outside site to do the fix again. I'm uncomfortable with that. Since I lost everything on a previous HP computer that I installed a service pack on, I am afraid of having to do the F10 thing again.
Can you suggest a less risky way of doing this?