There are some programs which will try to restart your computer automatically after getting installed or updated. Don’t Sleep can help prevent such automatic occurrences. With this portable tool you can block automatic standby, hibernation, shutdown, log off, screensaver, and monitor turn-off.
Apart from blocking such automatic occurrences, it also has a build-in option to stop blocking or shutdown computer at a specified time. This nifty little app sits in the system tray taking minimal amount of memory.
If for some reason, a function cannot be blocked, it is grayed out as you can see from the screenshot below.
A small but useful utility for Windows power users. Works fine on our Windows 7 32-bit OS.