Hello all: I just installed Windows 7 with SP 1 last week on my HP Pavilion desktop. I'm trying to have the screen go to black (or screensaver) after, let's say, 15 minutes. I set it and "save changes" but it never goes to black or screensaver. The screen just stays on. I've tried several times in Control Panel/Power Options, both with the balanced option and the high performance option. I've tried it with a screensaver and with no screensaver. I've tried various amounts of minutes and I've looked at possible settings under Control Panel/Personalization. Any ideas why "choose when to turn off the display" won't respond? Thanks.