I don't remember having problems with my power options until recently when I did the latest firmware update. I used to have my options set to dim the screen at 3 minutes and to shut off the screen & sleep at 5 minutes. my surface never dims the screen anymore. it seems to immediately shut the screen off and sleep at whatever time I have set to dim the screen. gotta do some more troubleshooting but does anyone who did the update have similar problems??