Power Management was turned on and now box will not wake up. Tried rebooting and nothing.It woke up once about 4 hrs after I turned it on. Then I tried about 6 hrs later and nothing.Unplugged it around 8 times and it starts to turn on with the welcome screen power with rebooting message but 3 seconds later it turns off and nothing. Even Shaw support could not get it back up. Any ideas on how> Without TV now for a week until support arrives here.,.