I've found how to stop the automatic restart for Windows Update on Windows 7 Home Premium using regedit, but I still get a dialogue box nagging me every four hours to restart my computer. Is there any way to remove this dialogue, or at least extend the time between nags? (Or better yet, replace it with a one-off nag, and maybe just leave an icon the system tray as a reminder?)
Run Registry Editor (regedit), navigate to the following key:
and look for a value labeled ForcedReboot.
If it's present, just right-click it, select Modify, and set Value data to 0. You're done!