You need to be a bit more specific in what you have to narrow it down so we know which of a good number of 10" tablets you bought... there are at least 3 variants with different processors and manufacturers that I can quickly think of and all can look very similar... the ZT-180 tablets that I have are sold under a least a half dozen different names but are all the same tablet and until the very latest formware update (0929) were Very tempermental connecting to WiFi especially if WEP Open security was the one being used... is you you change your security to None/Open for testing that would be where to start... WPA and None have always connected okay... WEP with Shared (vs. Open) works on latest firmwares also...