When you reinstall Windows and a driver is missing, you will see an "Unknown Device" in your Device Manager. You can find the specific hardware ID to identify the exact component:
The network card configurations depend on the sub-manufacturing batch. The hardware utilizes either an Atheros or Broadcom chip for local wireless connections and a Realtek chip for hardwired networks. Sony Vaio Pcg-31311m Drivers Windows 7
To find compatible drivers, you must identify the primary hardware IDs. The PCG-31311M is typically built on an AMD platform . When you reinstall Windows and a driver is