I tried getting my Vizio CN 15 ready it was working great but the charger that came in the mail kept blinking on and off after updating windows I wanted to check my RAM sticks so I shut down the computer and open the bottom looking inside closing it back up it would not turn back on and when I plug inside the charger I got sparks on the charger and some burn on the charger tip and on the side of the laptop I can only assume the over-voltage on the charger killed my motherboard.