Hp compaq nx 9030 does not power on

when i on my laptop it does not power on. i have checked and the adapter is working well.
please help me.
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More about compaq 9030 power
  1. Welcome to Tom's Hardware Forums,
    There are a few possibilities here,
    If the battery is bad, the computer may not work with it installed. Have you tried with and without the battery installed?
    Could be a broken or loose power jack. Does the power plug feel loose at the computer or not like it's plugged in all the way?
    Could be a bad micro-switch. Does the start button give you 'feedback" ie. Do you feel or hear a click when depressed?
    This is only a start of the possibe power issues but seemingly the most common, see if any of this is helpful so far.
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