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Keyboard Doesn't Work at All
No matter what you do, you can't get your keyboard to turn on.
Computer Doesn’t Recognize the Keyboard Is Connected
Try unplugging the USB cable and plugging it back in. If that doesn’t work, try using a different USB cable to connect the keyboard to the computer. If that solution fails, the keyboard’s PCB might be dysfunctional.
If your computer fails to properly install a driver for the keyboard, go here and download the correct driver for your keyboard and operating system.
Bad Connections Inside Computer
It’s possible that the USB port in your computer has lost connection with the computer’s motherboard; if so, you’ll need to open up your computer and re-attach the internal USB cable with the motherboard. Search iFixit for instructions on how to do this with your computer.
Just a Few Keys Aren’t Working
Most of the keys work, but a few don't.
If the keyboard has been used for a long time, there might be some crumbs from daily use. A vacuum cleaner can be used to remove small debris from the keyboard.
Some keys are shiny with use, and replacing them is much cheaper than buying a new keyboard.
Installing new keycaps
Keyboard is Too Loud
Your fancy mechanical keyboard is too loud!
Loud Clicking Noise while Typing
Lights don’t work
The LEDs on your keyboard don't light up.
Replace LED Lights
If a light on the keyboard is dysfunctional, you can replace it by following this guide.