Sometimes a computer is busy even though someone isn’t actively using the mouse and keyboard; including playing a movie, burning a DVD, streaming music, etc.. In these cases, you don’t want the machine to go to sleep because you’re using it – even though you’re not actually using it! uhm… yeah that’s right.
Most media players and disc burners tell Windows not to go to sleep while they’re running. But for those programs that don’t…
Give it Insomnia
Insomnia is a free utility that opens a small window on your screen. While this window is open – the computer will not sleep.
This works by calling a Windows API call, known as SetThreadExecutionState, but that information is for the curious geeks out there. For the rest of you – download and run it – it works.