If you try to run the original Setup.exe from Sony’s deprecated support site (which is now offline), you will likely see:

Connect to 2.4GHz Wi-Fi networks. Common chip in PCG-81114L: Atheros AR9285. Best Source: Atheros (now Qualcomm) AR9285 driver from Windows 8.1 or the DriverPack Solution offline pack. Alternative: If you cannot find the correct driver, consider a USB Wi-Fi dongle (e.g., TP-Link TL-WN725N) which has native Windows 10 drivers.

Use cautiously. The full offline driver pack (approx. 15GB) contains verified drivers for Intel 4-series chipsets. Run it without the internet to avoid bloatware. It reliably finds audio, LAN, and chipset drivers.

Keywords used naturally: Sony Vaio Pcg-81114l Drivers Windows 10, Sony Vaio PCG-81114L, Windows 10 drivers, Intel GMA 3150 Windows 10, Atheros AR9285 Windows 10, Vaio legacy drivers.

If you are manually searching, here are the likely components inside your laptop:

⚠️ Sony removed official drivers. Use these fallback sources: