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PC Power issue when CPU installed


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#1 dakotag

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Posted 28 December 2012 - 12:17 PM

Hi, I have a Dell XPS 200 that died. I was told it was the motherboard so I replaced. No dice. Discovered issue with PSU. Replaced. Got power to the machine but still wouldn't turn on. Had a flashing yellow light on power button. I disconnected all devices and checked power each time I attached a device. I ended up discovering that only when I added the CPU chip did it fail. So I replaced CPU (Pentium D 845). I still have the same issue. I've tried both motherboards with same result. When I put in the CPU the power fails. Without it the machine powers on. What could it be?

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#2 rotor123

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Posted 28 December 2012 - 01:13 PM

Hi, Look at this page for the Dell Diagnostics for your model.

Blinking amber

The power supply is operating outside of its normal range.

Check the diagnostic lights to see if the specific problem is identified. Also, see "Power Problems" in your computer Owner's Manual.


To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front panel. When the computer starts normally, the lights flash. After the computer starts, all four lights display solid green. If the computer malfunctions, the color and sequence of the lights identify the problem.


If you use the link above and report what the 4 lights configuration is showing then there will be more helpful information for diagnosing the problem.

Owners manual Here
Service manual Here

Good Luck
Roger

Edited by rotor123, 28 December 2012 - 01:16 PM.
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