Why does my PC take one hour to switch on?

Paul Nielsen January 7, 2011
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My desktop PC has begun being extremely slow in switching on, i.e. powering up – that is before the OS starts booting.

After pressing the power switch (a soft switch), the system doesn’t react at all until about an hour. By plugging a LED-equipped USB cable in the front-panel USB port, I noticed that its light gradually increases from off to full illumination by the time the system starts switching on, i.e. over an hour’s time.

My problem is that I don’t have a clue what the root cause of this behavior is. A Google search only returned OS startup problems – so how do I diagnose this?

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