So, I did a clean install of High Sierra on my early 2013 13" Retina MacBook Pro. I then installed NoSleep, which I sometimes used when plugged in and I have a process running that I don't want interrupted. It had issues however and would never stay in the menu bar for long. Also, with Sierra it would light up blue when activated...but in High Sierra it just goes from grey to a darker grey. That's all okay though. I can go without it (it hasn't been updated since 2013). Here is my real issue: I uninstalled it. I've removed the application itself and I can't find any traces of it in Library/Application support now. The problem is that my MacBook is continuing to run after I close the lid while on battery power even though I have the "Energy Saver" settings set to their default. It isn't sleeping. So each time I come back to use it the battery is drained or completely dead. Any ideas?