Question about Compaq 187498-001 Motherboard

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No beeps, no picture!

I replaced a psu that quit working with a new psu. Only this unit had 20-pin connector instead of the 24-pin connector that my old one had. The motherboard has 24 pins. I hooked up the new psu and it turned but no beeps. I did smell something burnt. I have one light on the motherboard but no picture.

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Please check whether there is burning in the motherboard due to this there is no switching in the motherboard. plz get the motherboard repaired. their is no problem in replacing the 20-pin psu

Posted on Oct 06, 2007


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Posted on Jan 02, 2017


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My power supply went down, i put a new one in but it is a 20 pin the gigabyte is 24 pin,it fits but will not work, have i got to use a 24pin,i was told a 20 will work,i hoe u can help

Hi davids38,

I really recommend getting a 24-pin adapter Power Supply Unit (PSU). I had this problem once and did purchase a 24-pin adapter for my 20-pin PSU but my computer wasn't stable (random reboots and lock up). I purchased a 24-pin PSU and my computer worked fine ever since. Hope this helps.


Feb 22, 2011 | Gigabyte GA-8I915P Duo Pro Motherboard

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After buying the motherboard i assembled it with an amd athlon IIx3 processor and 4gb 1333mhz ddr3 ram. i startup the system and there is no bios display or POST or beeping. the fan on the motherboard is...

Quadcore or multiple processors need this type of Power inputs . ok just buy adapter like below picture "4 pin to 8 pin adapter


You can also make your own cable. for pinout connections see below picture
Do it with your own risk

If you have any Old broken Power supply then you can make it yourself by cutting the 24 pin connector like below picture and modify

for this you must have the knowledge of litle electronics, volt meater etc

for easyar side buy new Power supply
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Do it with your own risk

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When powering on the fans spin and yet I get no video. The LED under the PSU (CR9E1) flashes. What is the LED indicating?

This indicates power supply failure. PSU means Power Supply Unit.

Replace the power supply.
MAKE SURE it is a compatible one!

What do I mean by that statement? In some years of Dell manufacturing, Dell made their computers "Proprietary".
This means only Dell parts could be used in a Dell computer.

The wires in the 20/24-pin ATX main (Motherboard) power cable, were put in different socket holes, than a standard 20/24-pin main power cable.
Yellow is 12 volts. Orange is 3.3 volts. Red is 5 volts. Black wires are Ground wires.

If an aftermarket power supply made by another manufacturer, were to be used in these type of computers, it will burn out the motherboard! Possibly the ram memory and processor also!

If you buy an aftermarket power supply, instead of a Dell unit, make SURE the colors of the wires are in the same place, as they are in the Dell 20/24-pin main power cable connector!

For more info about that last statement, I suggest you check out this page,

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Replacing a power supply.


You need to connect both 20-pin and 4-pin connector to *********** board. Your 4-pin connector is located between your CPU and a I/O connectors.

If you did it right first time, check if you have anything shorted on your board because your old P/S could go bad for reason.

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You may have a short between the board & the case. (check it).
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Without POST you will not get video to load. Reset your bios
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Let me know if this helps you reach POST?
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your connector is of two has total of 24 pin, can be divided into 20 and 4 pins.connect  20 pin  in your mother board .switch on ur psu and connect 4 pins to another port.

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