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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Re: No beeps, no picture!

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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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

1 Answer

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
best of luck

Do it with your own risk

Jan 26, 2011 | Gigabyte GA880GMUD2H AM3 AMD 880G HDMI...

3 Answers

Motherboard has a 24pin connector for the power supply, but the connector on the power supply has a 20 pin connect? How do I connect it correctly

i presume that is a pentium 4 or newer motherboard. you will need a power supply that has at least one or two of the small four pin connectors as well... generally if it has that the extra four pins slides onto the 20 pin connector on one side and that makes up your 24 pin connection.

Sep 10, 2009 | HP VECTRA VLI8 P3 Motherboard (KZM6120)

2 Answers


Hmmm.... mainly you have:
-20 or 24-pins connector, that is unique and goes directly to motherboard (powers motherboard and its components)
-4 or 8-pins connector that powers CPU
-the rest would be connectors for ROM (CD/DVD/BlueRay) and HDD devices (there are: molex and sata power conectors)

If you totaly unshure, there is manual:
Illustrated How to Replace an ATX Power Supply

Sep 05, 2009 | Motherboards

2 Answers

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,

Apr 02, 2009 | Dell (E210882) Motherboard

1 Answer

Mother board servicing

Have you verified that the PSU is OK.

DO you have a voltmeter?

Check the voltages on the main connector to the board

HERE is the 24 pin ATX connector

HERE is the 20 pin ATX connector

If the voltages are not there then either the PSU ON signal is not there, the ON switch is faulty or the PSU is dead.

Post back results and I will try to assist furher

Jul 09, 2008 | ASUS P4S8X Motherboard

1 Answer

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.

Good luck!!!

Jun 20, 2008 | EliteGroup K8M800-M2 Motherboard

1 Answer

915PL-A2: no post, no beep, no keyboard lights

You may have a short between the board & the case. (check it).
Even if this means removing the board. That clicking you hear through the speakers suggest a short. Make sure your using (Stand offs) which keeps your board off the case's mounting surface. Check the back plate so the tabs are touching the ports comming off the board for good ground.
Double check the you have fully connected both the main power ATX_ 20 pin power connector & the auxiliary 4-pin power
connector. pg. 10. Connecting 20/24-pin power cable Remove & re-seat. If your PSU has a 20 pin connector make sure you connect the cable from the correct end.
Without POST you will not get video to load. Reset your bios
pg. 9 in your manual. Re-enter your bios and setup the bios settings for your board.

Let me know if this helps you reach POST?
Good luck!

Mar 14, 2008 | EliteGroup (ECS 915PL-A2) Motherboard

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