Finding Windows 7 drivers for the is tricky because Sony officially ended driver downloads for many legacy models between 2004 and 2010. Since this model was originally designed for Windows 7, your best bet is using the VPC-series model name (found on the laptop's screen bezel) to search official repositories, as "PCG-71315L" is just a chassis number. 1. Identify Your Service Model
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Connects mice, headphones, and phones. Note: Bluetooth often breaks if installed before the Wireless driver. Common file: Atheros_Bluetooth_8.0.1.319 or Broadcom_Bluetooth_12.0.1.720 . sony vaio pcg 71315l drivers for win7