My granddaughter touched some keys on my keyboard and now my monitor won't go blank after 20 minutes of non-use like it used to. I checked my setting in screen saver power in Control Panel and it's still set at 20 minutes. What else can I do?1 person needs an answerI do too

First change the settings in screen saver power in Control Panel to some other duration and check whether it works. If it works, then change to the old setting which u want. Otherwise give check disk in Properties of your main partition and tick mark the two options and restart. If this works after restart, take a restore point.