A locked keyboard is a real hassle. Producing either odd characters and numbers or no response at all (no matter how many keys you mash), a locked keyboard prevents you from anything on your computer. While fixes vary from brand to brand and situation to situation, there are a number of approaches you can take to unlocking the keyboard on your notebook without having to call an expert.
Check your keyboard for any lights signifying a Number Lock, Caps Lock or Scroll Lock is on. Oftentimes people will turn these functions on without realising it.
Switch the function off by hitting the appropriate key on your keyboard until the light is off. Sometimes you need to hold the Fn (function) key as you press the button to toggle it on and off. This varies from notebook to notebook.
Try your keyboard and see if it works.
Click the Start button on the Desktop taskbar.
Open the Control Panel and click Accessibility Options. If running a newer operating system like Windows Vista or Windows 7, open the Ease of Access settings menu.
Select the option to adjust settings for the keyboard.
Check to make sure Sticky Keys, Filter Keys and Toggle Keys are disabled (un-check the box next to each option). These functions alter the performance of the keyboard and may cause it to slow down or seem locked.
Apply the changes and click "OK." Check and see if your keyboard is working.
Exit and close all programs on your notebook. If your notebook keyboard is completely disabled, use the mouse or touchpad to complete the task.
Shut down your notebook (Start>click the option to Shut Down).
Wait for your notebook to shut down and close it. Unplug the AC adaptor from the adaptor port, and flip the notebook over so you can see the battery.
Unlock and remove the battery from the notebook.
Give it a minute or two and then reinstall the battery by putting it back into the battery bay according to the instructions in the user manual. Reconnect the AC adaptor and press the power button on your notebook.
Battery removal and keyboard functions vary from notebook to notebook. Refer to the user manual for more detailed information specific to your PC.
Never disconnect battery and AC adaptor from your notebook while the unit is still running. This could damage the computer.