Unable to Reset MacBook Air

Do you have a wired keyboard you can plug in? Any cheap USB keyboard will do. You can also try resetting the SMC: How to reset the System Management Controller (SMC) on your Mac - Apple Support

Apple is now recommending you hold down the keys when turning on the power, and not waiting until the chime. This does work and requires less guessing.

Make an appointment at the Apple Genius Bar for service. If you need to find an Apple Store - Find a Store - Apple. If you did not purchase it from Apple then you will need to look to the vendor for service or How to find your nearest Apple Authorized Service Provider (AASP) or Distributor (AAD).

Without any working keyboard, you are stuck where you are.

@dialabrain: Yes, I know but that might have been temporary. I've had that happen to me many times. Was just a matter of turning the keyboard on and off to get it syncing again. If the OP cannot do that then he will need to take it to Apple for repair, don't you think?

I hesitate to bring this up but I have a similar problem with my iMac Pro. The timing of when to press the keys is so critical they rarely work. You could keep trying to "catch it" at the right time or go and get a $10+ wired keyboard. Best Buy, Staples, Amazon etc. have them for less than $20.

How To Do A Factory Reset

Selection A should be used on computers that came with Lion or later when factory new. These models had no disks included when new. Selection B is for Macs that came originally with Snow Leopard or earlier. These models shipped with Software Restore disks when new.

A. Factory reset of your Mac - Apple Support

B. Factory Reset Your Pre-Lion Mac

Follow these instructions until you get to Step 5 of Factory reset of your Mac - Apple Support. At Step 5 you will need a Snow Leopard DVD or the installer disc that came with the computer.

1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came with your computer. Insert the disc into the optical drive and restart the computer. After the chime press and hold down the "C" key. Release the key when you see a small spinning gear appear below the dark gray Apple logo.
2. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities' menu. After Disk Utility loads select the hard drive entry from the left side list (out-dented entry - mfgr.'s ID and drive size.) Click on the Partition tab in the Disk Utility main window. Set the number of partitions to one (1) from the Partitions drop down menu, click on Options button and select GUID, click on OK, then set the format type to MacOS Extended (Journaled), then click on the Apply button.
3. When the formatting has finished quit Disk Utility. Proceed with the OS X installation and follow the directions included with the installer.
4. If you are planning to sell or give your computer away, then do the following: After you reformat your hard drive and reinstall OS X, the computer restarts to a Welcome screen and asks you to choose a country or region. If you want to leave the Mac in an out-of-box state, don't continue with the setup of the system. Instead, press Command-Q to shut down the Mac. When the new owner turns on the Mac, the Setup Assistant will guide them through the setup process.

Doesn't work with my iMac Pro. I've already spoken with 4 senior advisors about the issue and they have posted an engineering ticket. FWIW, plugging the charging cable into the keyboard does work as well as using a wired keyboard. Thank you though.

Kappy? His keys aren't working on startup.

I see. I don't know how to turn the keyboard on and off with a MacBook Air. Apparently restarting it isn't working.

I will never have an iMac Pro. Too much money and power for my needs. Of course, if it could cure my diabetes I'd buy two of them. 😁😁

Ouch. I just found out I have diabetes on my birthday last month. I can sympathize.

Eating too much, are you? That's what got me.

Yep. Once I retired and quit smoking all I had left was eating. 😁

Look at it my way: at least you die happy. 😁 I quit smoking five years ago but retired 18 years ago. But I've been eating all my life and, rarely, if ever, disliked it. 😁