The closest I could find to my problem was this, which is similar but not the same, and the solution doesn't work for me: I would've thought this was a simple problem, but I've spent over two hours Googling etc for a solution. Computer goes to sleep after a further ~15 seconds.Computer stays on, crunching whatever data you've left it to do.Screen switches off after a short delay (~30 secs).Ensure 'On resume, display logon screen' is off.Open screen saver settings (Win-S, Change screen saver).Set both 'on battery' and 'plugged in' change 'Put the computer to sleep' to something high or 'Never' (I have 15 mins for battery, 1 hour for plugged in, tried 'Never' for both too).Click change plan settings next to the current plan ('Dell' in my case).I've got a Dell XPS 13 (9360) with Windows 10 Home.
