(serious you would be surprised how many time people accidently hit airplane mode by accident.) Make sure the airplane mode in not on.
Here are some trouble shooting tips for often over looked quick fixes that you can try first, some of these are ridiculously simple but can disable the Bluetooth chipset in Windows (especially 10 & 8) If you know what you are doing you can jump to the bottom of the page and download them now. This error message is the most common error messages is exhibited by the onboard Broadcom Bluetooth chipset in your laptop/notebook or table, and it is not a big issue and is usually fixed by re-installing the Broadcom Bluetooth drivers that are at the bottom of this page.