laptop error at starting & shutdown

When i shutdown my Laptop the windows goes but power button remain on until i press it for 10 or 20 seconds . Again in turning it on i have problem so i remove the battery for a few minutes,two or three times i do , till it will turn on.

  rdave13 19:58 05 Oct 14

You can try this bit of Witchcraft; remove the battery and AC power source. Press and hold the on/off switch for 30 to 60 seconds. This discharges the capacitors and any build-up of static. Replace your power sources and try the laptop.

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