I've had my 700wx for about a month and love everything about it except this; lately my phone screen has taken to turning black when i turn it on (DSOD?). you can tell that it is turned on as the blackness seems to flicker a bit as though it is trying to show the start screen but cant. I have read elsewhere about issues with SD cards and Activesync. Are these what is causing this? i want to make sure I am having the same issues and that this could not be a different issue. It is now to the point where everytime I turn the thing on I have to reset to get the screen to work . PLEASE HELP!!!!