I have the TS508WF model and I was trying to update. After it was done updating it stayed in the blue update screen and didn't restart. Now the screen goes blank after 5 seconds, when I hold the power button in the screen comes back on showing date time and update in center. When I let go of the power button the screen goes blank. when you press the power button again the blue screen comes back on. It will not shut down no matter how long you hold button in.