If the wireless adapter is not detected, ensure the physical wireless switch on the front edge of the laptop chassis is set to the position. Additionally, ensure you downloaded the correct wireless driver vendor package (Atheros vs. Broadcom). Fn Keys (Brightness/Volume) Do Not Respond
The chipset controller facilitates communication between the processor, RAM, and motherboard buses. Install these before configuring network adapters or graphics cards. Sony Vaio Vpceh25en Drivers For Windows 7 64 Bit