I have the HTC evo 4G which has been working fine until today and now it won't turn off. It only shuts off the screen. I don't get the power off box. After reviewing your suggestion to uncheck the fast boot box under the Application section under Settings, I realize my fast boot was never checked. I have been updating information on my phone and went to turn it off for the evening and...NOT. I fear I my have inadvertently screwed something up while attempting to fix this problem. Please help.