Question about HP Pavilion a420n PC Desktop

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Light yellow under blue on light. power and fans on.

What can I do?

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  • Ben Wabnick
    Ben Wabnick May 11, 2010

    Change out the hard drive, sounds like its having trouble running. Put in a known good working hard drive and see if the constant yellow light goes away.

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  • 18 Answers

Just unplug first the ac cable after 20 seconds pluin and test again. or it the same problem just open your cpu ang pull out the memory and clean the surface and insert again test your cpu again

Posted on Jun 26, 2009

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6ya6ya
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Posted on Jan 02, 2017

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Hi, All the Info You Need Is Detailed Below:


Front Power Distribution Center Fuses
# Amp Description

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18 20 Yellow Selectable Power Outlet
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21
22
23
24
25
26
27 10 Red Airbag/Occupant Classification Module
28 10 Red Curtain Airbag - if equipped
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32
33
34
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