Hi, i'm new to Android but very impressed with it so far. I've just purchased a cheap CloudNine Neuropad Infinity for my son for Christmas. everything seems to be ideal for him, he only wants to take pictures, watch videos and play games. The problems started when I took it out fo the box for the first time, I had to charge it but once I plugged the mains charger in, I could not use the touch screen. it acts like it's locked. ANy ideas?