My laptop suddenly stopped working

my laptop suddenly stopped working  and when i restart it the power button lights up but the screen doesn't on. and also the capslock is on and another light ons on the keybord with a symbol of all four arrow keys(its not a key) i really am having trouble with it. if anybody can help me please..

Unplug the AC adaptor, remove the battery, press and hold the power on button for a minimum of 30 seconds, then replace the battery and see if it powers up.  If not, repeat the above but this time only plug the AC adaptor in and see if it works.  If that doesn't help, repeat the above and this replace the battery and plug the AC back in.  If that doesn't take care of it you should remove the memory sticks reseat them, them try again.  If you have two sticks try with only one at a time to see if that helps.  If not, try removing the hard drive and boot to a Linux Live CD or some self booting diagnostic cd to see if the hard drive is the problem.  If none of the above helps you'll need to take it to an authorized service center if it's still under warranty, or to any repair shop if it isn't.

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    Welcome to the HP Support Forums!
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    How Do I Find My Model Number or Product Number?
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    I work on behalf of HP
    Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution.
    Click Kudos Thumbs Up on the right to say “Thanks” for helping!

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    View Solution.

    Dear Customer,
    Welcome and Thank you for posting your query on HP Support Forum
    It looks like you are facing difficulties to resolve Touchpad Issues with your Notebook
    We will surely assist you with this
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