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My laptop acer extensa 5420 doesnot turn on. The power switch light went i hit the on/off switch?

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Sounds like the motherboard. Take the cover off the tower and when turning your computer on inside there is a green light and if it goes to an orange light and stays flashing the motherboard needs replaced

Posted on Sep 15, 2010

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Just for the heck of it, try blowing out the cooling fan with some compressed air. If you have never cleaned it and the fan stops turning, the computer will go into a safe mode and not start up.
Ther should be a vent somewhere on the side of the laptop that vents hot air cooling the CPU. That is where you need to blow it out.
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