ok so earlier today, i was forced to download a new dashboard and now my screen is flashing ever half to twelve seconds. i really want this fixed. i tried a hard reset (holding the power button for 15 seconds and unplugging while console was on) and it didnt work. i tried a different hdmi cable and that didnt fix the problem either. i tried calling xbox to help me with this issue but they told me that because i was a preview member, that my only option was to look through this forum for a solution which im unable to find. ive been a huge xbox fan since the beginning but i am extremely disappointed with their latest console. and have this new issue that was cause by the update is truly troubling. i really want to get this fixed so that i can continue to complain about all of the other issues that this console has before this one occurred. and help and advice would be greatly appreciated.