I recently mentioned the stuttering problems I was seeing in some games (Half-Life 2 to be precise), and my attempts to fix it with nForce 4 drivers and a fix from AMD. One of these changes, strangely enough, has made my computer run hotter (the graphics card now reaches up to 50 degrees under load, which is still somewhat cooler than my previous card, but warm nonetheless).
Before installing the nForce 4 drivers, I created a restore point using Microsoft's System Restore. And, after I noticed the heat problems, I tried to go back to the state the machine was in before I did the driver install. But restoring to my saved point doesn't work! After a reboot, Windows reports that it was "unable to restore to the previous point" and that nothing has been changed. I'm not exactly sure why I tried System Restore, because it has never worked for me before. Has anyone else ever gotten this thing to work? As far as I can tell, it's completely useless.