Power management is cutting power to the PCIe slot. Fix: Device Manager > Network Adapters > Intel WiFi > Properties > Power Management > Uncheck "Allow computer to turn off this device" . Also, disable "MIMO Power Save Mode" in the Advanced tab of the driver.
: Not officially supported; performance is generally limited due to aging hardware. Key Driver Challenges : Sony Vaio Pcg-41213w Drivers
If you have a driver pack or know the "VPC" model equivalent (e.g., VPCSB series), please let me know! Option 2: The "Quick Fix" Guide Post Power management is cutting power to the PCIe slot