Even if you don't see an exclamation point, though, we recommend right-clicking your keyboard in this menu and choosing Uninstall Driver. If any of the items in this section have a yellow exclamation point next to them, it can indicate a problem. Open the Start menu and type "Device Manager." Open the Device Manager entry in Control Panel, and expand the Keyboards section. Sometimes the driver managing your keyboard can run into problems, particularly if you install third-party software often and/or you turn your machine off all the time without using the Shut Down command. If that doesn't fix the problem, try booting into Safe Mode and see if that works-it won't fix the problem permanently, but it will help you determine whether your keyboard is faulty or not. If you can't use the trackpad or mouse to reboot the PC, just hold down the power button for about 10-15 seconds to turn the PC off, then turn it back on.
Have you tried turning your computer off and on again? Before you attempt any random fixes, a simple reboot can correct a thousand ails. This can be a huge hassle, but there are a few things you can try before you call for help. Worse yet, the keyboard cuts out entirely. Or maybe a whole section of keys is taking forever to respond.
You could be working on your laptop, when one key suddenly stops working. But the problem isn't always that widespread, so it often means you're on your own if something goes wrong. It's why Apple is paying people $395 to settle a class-action lawsuit for its faulty butterfly keyboards.
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