computer doesn't boot up

Question

I had to replace the blower over the heat sink on my 4700C. The blower and heat sink came together so I thought I had to replace them both. When I removed the heat sink on my computer, the male part of the processor was attached to the heat sink, so I plugged it back in and just attached the new blower to the old heat sink. Then I plugged the computer back in - the blower works great, but it appears that is all. The light on the front of the case is on as if the computer is on, but the computer doesn't boot up. Pressing that button doesn't seem to do anything. Another thing I noticed is that the little light on the inside doesn't stay on for a little while when I unplug the computer. What has happened???

shesagordie · Answer

maudieG wrote:

I had to replace the blower over the heat sink on my 4700C. The blower and heat sink came together so I thought I had to replace them both. When I removed the heat sink on my computer, the male part of the processor was attached to the heat sink, so I plugged it back in and just attached the new blower to the old heat sink. Then I plugged the computer back in - the blower works great, but it appears that is all. The light on the front of the case is on as if the computer is on, but the computer doesn't boot up. Pressing that button doesn't seem to do anything. Another thing I noticed is that the little light on the inside doesn't stay on for a little while when I unplug the computer. What has happened???

Open the case and check all the power and data cables, by removing and reseating them. Check the processor is installed correctly and there are no bent or broken pins.

http://support.dell.com/support/edocs/systems/dim4700c/en/SM/parts.htm#wp1052372

What is the sequence of the diagnostic LEDs at the back panel of the case?

Is the power button LED, green, blinking green, solid amber, blinking amber?

http://support.dell.com/support/edocs/systems/dim4700c/en/SM/adtshoot.htm#wp1043338

Bev.

Please don't send me questions about your system by DCF Messenger.
Post the issue in the appropriate Board, where they will be answered.

Prof007 · Answer

whats the color of the light on the front, amber or green?

maudieG · Answer

On the front: The power button is amber and the other light is green

maudieG · Answer

Bev, The power button is solid amber. I have removed and reseated all cables and boards. The processor doesn't have any broken or bent pins. The LED's on the back are not lit up at all. Terri

Prof007 · Answer

there is a 'P4' connector near the back of the motherboard (two yellow and two black wires)... make sure thats firmly seated.   its looking like a bad Power Supply, Motherboard, or CPU. my advice would be replace in that order: least expensive - most expensive.

shesagordie · Answer

maudieG

Did you try removing and reseating the memory, check for any burnt or damaged power connectors?

A solid amber LED, usually indicates a failure of either the motherboard or the processor. Generally, it is the motherboard.

Bev.

Please don't send me questions about your system by DCF Messenger.
Post the issue in the appropriate Board, where they will be answered.

Message Edited by shesagordie on 11-17-200604:48 PM

maudieG · Answer

Thanks Bev - the computer is 3 years old, so I'm looking to replace it.

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computer doesn't boot up

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