There are multiple reasons for a keyboard to be partially or entirely dead, as well as many different solutions.
For keyboards with certain keys not working, try cleaning the keyboard first with compressed air, as various small objects can get between the keys, such as lint, dust, and food crumbs. If the problem persists, follow these steps.
- Unplug the laptop and turn the power off.
- Remove the laptop battery.
- Hold the power button down for 60 seconds.
- Re-install the laptop battery.
- Turn on the laptop.
If there is still a problem, the keyboard likely has internal damage and a technician will need to inspect and solve the problem in person.
If the entire keyboard is not working, there are some solutions to this as well. First, right click the start menu icon and click Control Panel. Click Ease of Access, then Ease of Access Center, and finally Start On-Screen Keyboard. This is a temporary fix and will make later solutions much easier to accomplish. While you’re in the Ease of Access Center, go to “Make the keyboard easier to use” Under “Explore all settings ” and make sure the “turn on filter keys” check-box is unchecked. The most likely reason a keyboard is not working is a faulty driver. To fix this, follow these steps
- Right click on the start button, and click on Device Manager.
- Search for Keyboards, and click on the arrow pointing towards it. Then, right click on Standard PS/2 Keyboard, and click properties.
- Click on the drivers tab, and select uninstall.(If uninstall is grayed out, you must log-in as an administrator, or contact your computers administrator and explain the problem to them.) Agree to all pop-ups after that, and click OK.
- Restart your computer, and the keyboard should be working fine.