I have the "so-called" latest 7" android 4.0.3 tablet. User manual hopeless but so far so good in downloading apps. etc. Yesterday I connected up to my pc fine and transferred 3 test files. It also said it was charging from the USB cable too. TODAY my pc first of all recognised the G drive and asked me to insert a disk. On properties it showed this drive as having 100% free memory Then it showed it as drive F and drive G (both with free memory). Then I tried all 5 other USB ports on my pc but it stopped showing any external device and the sound of the cable being inserted stopped. I have ordered an SD micro card but don't know if I can transfer my music files from pc to tablet this way. Also yesterday when I was installing my VPN my tablet actually reproduced all the Google web sites I was using on my pc to get the instructions as to how to configure my VPN for the tablet. Today that also didn't work. I must admit I have played about with the tablet experimentally, not really knowing what I am doing as I can't find a manual online. I am new to this, so hope someone can help a damsel in distresss as I love my Zenithink C71 to bits and don't want to have to return it to China and then get another which has the same problems. I also tried downloading the USB drivers from Zenithink site to both my pc and my tablet. Come on guys please please help. I have spent 4 hours searching the internet for solutions but not found any for this device.