I've had the same recurring issue since I bought a laptop with this wireless adapter about 18 months ago. The device randomly just malfunctions and will not find find any wireless networks. I have searched online and carried out all the suggested fixes and none of them solve the problem for more than 24 hours.
I have tired :
Uninstall the adapater in Dev Mgr & remove driver details
Unintall Proset drivers
Still does not work. The only way I can (occasionally) get this is to work is by carrying out the above, but not installing the Proset drivers and allowing Windows to select a driver on its own.
I have tried unticking the box to allow Windows to turn the device off to save power and this has limited success. Sometime between the next shut-down restart or in the subsequent few restarts it will go wrong.
Sounds like this is a well known issue that has been going on for a long time and still no fix from Intel - have to say I am very disappointed.
Any advice here?