More battery information from http://battery-store.com.au/blog
Hi. Please do troubleshooting steps below:
1. Check to be sure your "Number Lock" or
"Function Lock" keys aren't lit. These can lock out certain parts of
your keyboard. If either of these is lit, press them to unlock the
locked portion of your keyboard. These can be found at the top right on
a laptop and between the number pad and main keys on a desktop keyboard.
2. Save all open programs using your mouse. Use your mouse to restart your
computer. This will only work if your computer isn't frozen. If your
mouse doesn't move, press the power button on your Dell until the
computer turns off. Press it again to restart. If the issue was lack of
memory or a locked program, this will unlock your keyboard. Continue to
Step 3 if the keyboard is still locked.
3. Shut down your computer using your mouse or power button. Don't restart. Unplug your Dell.
4. Remove the battery if you're using a laptop by turning the laptop over
and sliding the battery release latch. Slide the battery out and
replace after one minute.
Have a good one!
Read more: How to Unlock a Dell Keyboard | eHow.com http://www.ehow.com/how_5063232_unlock-dell-keyboard.html#ixzz0uguUk4bZ
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