Wifi - No hardware Installed

[Patrick-32]

MBP late 2011, El Capitan

Hi,
Out of nowhere my wifi stopped working, My OS is up to date. I tried resetting NVRAM.

I have to use ethernet cable to connect to internet.
Is there anything else I can do, why would this error happen out of nowhere?

 

[CoastalOR]

Electronic components can fail at any time. It sounds like your Airport/Bluetooth board might have failed. Here is a step-by-step guide for replacing a Airport/Bluetooth board. I picked instructions for a 15" since no screen size was provided.

Any chance to boot up from a previous OS to rule out a El Capitan issue before replacing hardware?

 

[simonsi]

why would this error happen out of nowhere?

Stuff breaks. Seriously - you must understand that concept?

 

[maflynn]

Out of nowhere my wifi stopped working,

It happens - bummers on having to deal with this.

I have to use ethernet cable to connect to internet.

Well, at least its accessible by way of ethernet. Check out ebay and see if you can get the parts to replace it from there.