I have some Dell Latitude ST Windows 7 tablets and I am having major problems getting them to stay connected to wifi. They have the Dell wireless branded 1535C pci-e half minicard, which is atheros based and is running the only and latest driver I can find (3.1.2.41).

I have tried to connect via the serial interface but I am unable to get into the base configuration. It does not receive a break command to bypass the start-up, I have tried a direct serial port connection and also a USB Serial connection with multiple applications;

i use a dell inspiron 5520. yellow exclamation mark under Intel WiUsb driver. tried updating the intel centrino N-2230.. but still hazard mark persists. i downloaded and installed both Wireless_15.6.1_De64 and Wireless_15.6.1_e64 files.. i cannot connect through WiFi.. please help..