Android Tablet displaying half keypad

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http://androidforums.com – I'm trying to help my friend who has an Android tablet. There is a pin number that needs to be entered when the device turns on, but the keypad that appears is only the bottom half of a keypad. It only shows 7 8 9, 0, and "ok". You can't select numbers 1-6, so I cannot sign in. I have a picture of it, but I can't post it since I just registered here and can't post pictures yet. I'm calling the device a tablet, but it is in Chinese and I really can't tell much about the model. It has 4 buttons on the side (Volume up, volume down, back, power), and 4 ports on the bottom (headphones, sd (General)