No the wireless module is not soldered to the board in [guide|60204|ifixits hand dandy teardown|stepid=125766] you can see the wireless module:
[image|1058807]
Try checking that it is seated correctly in it's little port there, also make sure the antenna is connected properly.
But before that, try uninstalling the drivers and then reinstalling them, MAKE SURE YOU HAVE DOWNLOADED THE DRIVER BEFORE YOU UNINSTALL IT!
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If that doesn't work you can always just buy a USB wireless "Dongle" although not a real solution to your problem, it bypasses the possibly defective wireless module.
No the wireless module is not soldered to the board in [guide|60204|ifixits hand dandy teardown|stepid=125766] you can see the wireless module:
[image|1058807]
Try checking that it is seated correctly in it's little port there, also make sure the antenna is connected properly.
But before that, try uninstalling the drivers and then reinstalling them, MAKE SURE YOU HAVE DOWNLOADED THE DRIVER BEFORE YOU UNINSTALL IT!
Let me know how you get on.