Motorola Mobility OEM Bluetooth USB PC Adapter with Widcomm Software CD 98578/98578H V3 V710 V600 "inspiron 1525 network switch location" Questions

...Inspiron 1525 i picked up off ebay for cheap, i wanna reset it back to factory settings, ive never had a Dell Laptop before, and i dont know what to press when she boots up to get me to the restore ...