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Sony PCG-731 Wifi
A lot of newer wireless adapters are simply plug and play, in that you just plug it in the USB port and the OS will handle everything from there. The WiFi in your laptop, if so equipped, uses an adapter to communicate with your wireless router or modem. It will be easier to buy a common WiFi USB adapter and install it, than to replace any built-in adapter your laptop may have. Searching for a new adapter is simple because the only thing you have to know is the operating system that is installed on your Sony laptop.
Elements to watch for in a bad onboard WiFi
- The WiFi adapter driver cannot be installed
- The WiFi adapter on your laptop does not connect at all
- The wireless signal goes in and out all the time
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