or similar) model name, as "PCG-71811W" is a chassis number rather than the official marketing model. Sony Asia Pacific Recommended Strategy for Windows 10 64-bit Windows 10 Information for Sony VAIO PC
The Sony VAIO PCG-71811W (often marketed under the model name ) is a reliable 2nd-generation Intel Core i3 laptop that remains functional today with a few modern upgrades. While originally shipped with Windows 7, many users transition it to Windows 10 64-bit to maintain security and software compatibility. Sony Vaio Pcg-71811w Drivers For Windows 10 64 Bit