Cause Operating System only stating what happening and not the cause/reason of it, its like how they are programmed and honestly if a OS could do that i would start worrying that "skynet" would be lurking around the corner to replace humanity.
It needs intelligence to recognize the reason for something that's why a simple OS/Software cant do that, until we get Artificial Intelligence running that is, but in that case we get other Problems 🙂 .
As in my Case i also just could have stopped browser gaming at same time as running CoH, but i didn't want to do that, so the other solution was upgrading.