Sometimes the repair person forgets to connect both wifi antennas.
I have a Samsung R480 laptop with Windows 7. I recently had some minor hardware repairs done and since then, have had trouble with the Wifi detecting available networks and connecting to them.
Wireless ability is turned on. Sometimes the available networks show up but I'm unable to connect to them and then a few minutes later, I can't see any networks at all. I'm currently not able to connect to the internet at all through the laptop, so I need troubleshooting help that can be done without internet access.
If you're able to offer advice, please give detailed instructions as my familiarity with these things is limited.
Note: At the moment, I am at work trying to pick up the wireless which I am able to access from other devices.