Took a look at this, and it does not seem to apply to me.. I am not wirelessly connected. And when I click on my network, I do not see any option to turn airplane mode off or on. Also, the little jet icon they show at that link, is not the same as the large one I have.
Computer Type PC/Desktop System Manufacturer/Model Number Self built OS Windows 8.1 Pro CPU Intel Core i7-4790 Motherboard GA-Z87X-D3H Memory G.SKILL 8GB (2 x 4GB) DDR3 F3-10666CL9D-8GBNT Graphics Card Sapphire ATI Radeon R7 250 Sound Card Realtek ALC892 Monitor(s) Displays Samsung UN32EH5000, Dell 1703FPT Screen Resolution 1920 x 1080
Keyboard Logitech K800 Mouse Logitech M705 PSU SeaSonic M12II SS-500GM Case Fractal Design Define R4 Cooling Zalman CNPS9900ALED Hard Drives WD5003AZEX
Samsung 128 GB 840 PRO Internet Speed 16 Mbps Browser Firefox Antivirus Avast Other Info Bose Companion 2 Multimedia Speakers
Right click on the icon and disable "ASUS Mini Bar".
Ah Ha! That was it! It was nothing to do with the internet, but rather the power status. Odd that it still appeared even when I disabled this ASUS startup. And odd that you can do nothing with it.. clicking on it to change power options does nothing. Will need to look into this more.
Interesting that it turns out to be an ASUS high performance thing. Kind of confusing since a plane icon is thought of as Airplane Mode. I suggest they change that to a Formula One race car or similar.
Computer Type PC/Desktop System Manufacturer/Model Number Acer T690 OS 8.1 Pro X64 CPU Intel Pentium D Dual Core Motherboard Acer/Intel E946GZ Memory 2GB (max upgrade) Graphics Card Intel Graphics Media Accelerator 3000 - PCI Express x16 Sound Card Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support Monitor(s) Displays Acer AL1917W A LCD Screen Resolution 1440 X 900
Keyboard Acer Windows PS/2 Mouse Wireless Microsoft Arc PSU Standard 250 watt Case Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5" Cooling Dual case fans + CPU fan Hard Drives 350 GB Seagate Barracuda 7200.10
Thumb drives Internet Speed 54mbp/s Browser IE11 Antivirus Defender Other Info Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1