Question about Compaq Evo D500 PC Desktop

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Problems with EVO500 mobo power pins

I recently obtained a evo500 mobo. I am kind of throwing a pc together with different odds and ends. So far I have an old 6x cd drive, on old 200w 20 pin psu, 3x 512 mb 133 mhz sticks, a 20 gb 2.5 in sata xbox 360 harddrive (ntfs reformatted of course), a 2.2 ghz pentium 4 cpu, and a AOpen QF50B 7-Bay ATX Computer Case. I bought a molex to p4 adapter for the p4 power supply, a 20 pin to 24 pin psu converter cable, and a sata to ide adapter to get everything nice and hooked up. Now I only have one problem, my mobo is set up to use a single plug type deal for the power button, reset button, etc.. but my computer case came with seperate plugs. One for the power led, one for the power button, one for the reset button etc.... . How can I tell which plug should go where as my mobo does not have them individually labeled? Any help will be greatly appreciated.

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This poage has a link to download a copy of the service manual for that motherboard

hope it helps.

Posted on Feb 02, 2009


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Cant remember password do i reset the computer Compaq evo500

You can remove or change the Window's User or administrator'spassword. You need access to a computer with Internet access to download theHiren's Boot CD and burn it onto a CD. Then insert this CD into the laptop/computer and boot upthe laptop/computer with the Hiren's CD and follow the instructions. There are very useful utilities CD and it a Linux boot CDwhich contains quite a lot of Utility programs including a password removalprogram. Click on one of these links todownload HIREN'S BOOTCD :-

Sep 10, 2011 | Compaq Evo D500 PC Desktop

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I want to get a usb 3.0 hub and plug it to the asus p8p67 pro on the middle of the mother board. What kind of connection is it?


The header bus above is for the USB Front Panel interface:

This is included in many of the various flavors of the MoBo. If you're looking to use the MoBo connector to supply something other than this Front Panel interface, you're going to need to obtain the pinout of the jack on the motherboard and compare it to the signals required by your USB 3.0 device. The one from Asus is simply gathers the wires and forms them in a single shell - then keys the shell to prevent reverse insertion.

Think of what you have to do as the way USB 2.0 headers are provided on MoBo and the way PC cases have USB jacks built in. The USB header isn't standard; some have 9 pins - some even have 10! They can't seem to get on the same page as to how many pins are needed. The location of the signals on the header are probably different from brand to brand, too. So, the case manufacturers break up all the individual wires and label the signal so that YOU can check the MoBo manual and plug each one in to the correct pin.

May 06, 2011 | ASUS P8P67 PRO - ATX - INTEL P67 - SOCKET...

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Computer won't power up unless I jump pin 16 and 17 at the 24 pin connector at the motherboard. After I jump it, it runs till I shut it down. It will power up on a few more start ups but soon goes back to...

a real answer. not bs above.
you proved the PSU is ok, why go there?
the why this works is the chip called South bridge.
does all this (this is how (also) the windows start button and shut off works, called SOFT POWER OFF)
the button on the front panel is a N.O SPST switch.
normally open momentary and shorts a specific and non world standard pin on that mobo to ground, (adjacent pin)
this sends a logic zero state (0v) to the South bridge
then it turns on a transistor on that mobo and that grounds pin 16 to PSU, and PSU magcially turns on.,
end theory101....
the problem can be ; the switch is plugged in wrong. or bad.
HP uses vast numbers of MOBO in PCs so have all different pinouts. and hard super hard to trace and learn that.!
all mine are keyed, and the mobo is silk-screened painted, Front panel.
the other possible is that the PSU is not putting out standby power
on pin 9, with PSU plugged into the wall pin 9 must be at 5vdc.
if not the South Bridge will be dead.
as will the power switch it supports

The South bridge runs power. managment.
the 945P must have PSU standby power and the switch most reach its power on pin, or there will be no working switch ever.

The PC can also force the PSU off if one of the onboard
power regulators are reading wrong (say too high)
The power management is complex, but not that one pin,.below.

Power management,
wake on LAN, sleep, hibernate. and more.
but all we care is the power switch but if the above features work then the switch is bad, and why I mention that.

my PC can even self turn on at 6am if I want, (a bios features) self power on...

now the list of simple..tests,etc.
1: PSU pin 9 must be 5vdc at all times, wall plug aC connected.
and if read of PSU has a switch, set to logic 1 , (1/0 labled)
means on.
2: the correct working switch in front panel,
2b< that switch must be on the correct jack on the mobo and not off one pin or some other ERROR. there.
3:the PSU good ... some are not, (complex reasons) skip i will.
4: the MOBO most be good, (and not overheated)
will the PSU turn on if dvd/cd drive and HDD drive cables pulled.?
even pull RAM. sticks? it will beep like mad but will turn on.
and be dead but turns on. like that. well most do.
5: jump the pin below, does that turn on the PC? as it must!

A DT PC 12 years old now.

m7480n this PC is now retired at HP means zero support.
no service book but it lacked the power jack info in most cases

DATA: (first know what is there, the mobo is clearly labeled. look?
this is the best search I did for you,at HP real, yours
  • Manufacturer: Asus
  • Motherboard Name: P5LP-LE
  • HP/Compaq motherboard name: Emery-UL8E

ive owned many P5 in my life, not now but am an ASUS guy.

but this old board we can do research on it,
I like HP and HP likes ASUS as do I. both.
knowing this fact
we see
Asus Leonite P5LP-LE User Manual

then we find the book on it next like this, (took me 1second )
page 5 shows layout

bottom right shows, (F_panel) Bingo, on jack.

page 25 covers that jack
so pull the jack there pull plug from jack
then jump pin gnd /pwr pins with screw driver tip.
if PC turns on the switch was bad or plugged in wrong,
if not the PSU is dead, Standby power is dead, pin 9

p25-0kaf4dlf4nbtfyx5ejcudwbi-5-0.jpg Asus books always show all this, but never HP for some odd reason. (details like this)
good luck

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I am unable to install the network card of compaq evo... although i had tried to install driver from hp website of evo300 and evo500 series. please provide the solution for this issue.

There are 3 possible Ethernet adapters for your model.
3COM - Click For DownloadBroadcom - Click For DownloadIntel - Click For Download
Assuming you are using the card that came with the model and not a third party expansion card one of these three drivers should be the driver you require. Most commonly Broadcom is used by HP/Compaq systems so that is probably the best one to start with, Intel second, 3Com last.

Aug 27, 2010 | Compaq Evo D500 PC Desktop

1 Answer

I can't find where the connections of the front panel are on the motherboard or where they go?

The eMachines T2893 desktop computer uses an Inte G845GVSR mobo. (MOtherBOard)

Intel Support>D845GVSR>Motherboard Manual,
(Intel's name - Product Guide),

I would like you to left-click on the top file.
Click right on - Product Guide - PDF, in blue.

(File name underneath it is -
File Name: D845GVSR_Product Guide_English.pdf )

May take up to 30 seconds, before you see the first page.
(You will be staring at a blank screen until the first page comes up. The file is downloading in the background)

Took 5 seconds before I saw the first page, and an additional 12 to fully download, using a medium speed DSL connection.

The Front Panel header on the mobo is shown on Page 31. (C on the illustration. J9G1 on the mobo)

The Front Panel connections are on Page 32.

Barring that you cannot download this PDF file, or do not understand the manual, I will detail the Front Panel header connections.

Orienting the motherboard so we are both looking at it the same way;

The Processor is at the top, the ram memory slots are to the right side of the mobo, and the white PCI slots are to the bottom.

There are three PCI slots. The one closest to the Processor is PCI 1.
The one closest to the edge of the mobo is PCI 3.

To the far right of PCI 3 is the Front Panel header.
It's the header located closest to the Right side of the mobo, and the bottom edge, and is directly below the
CMOS battery.

There are two rows of pins.
Four across the top, Five across the bottom.

The top row of pins are numbered Evenly.
The bottom row of pins are numbered Odd.

Starting from the Left side of the mobo, going to the right, on the Top row,

Pins 2, 4, 6, and 8. (There is No 10)

Starting from the Left side of the mobo, going to the right, on the Bottom row,

Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the Harddrive Activity LED
If you have a wire with a + sign on it (Positive) it goes to Pin 1.

B) Pins 2 and 4 are for the Power On LED.
(Pin 2 to the Green LED lamp, Pin 4 to the Yellow LED lamp, if applicable with your computer)

C) Pins 5 and 7 are for a Reset switch. (If applicable)
(Pin 5 is Ground)

D) Pins 6 and 8 are for the Power On switch.
(Pin 8 is Ground)

E) Pin 9 is for the +5 Volt power.

(You are following Anti-Static precautions, right?)

Have any questions just post in a Comment.
(Believe upper right of your page)

Jun 13, 2010 | E-Machines T2893 PC Desktop

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Odd PC Build Bootup Problem:: I recently built a PC and have an odd problem when booting up. Build: MOBO: M2N32-SLI Deluxe CPU: AMD 6000+ RAM: Corsair 2 x 2048 PC6400C5 GPU: Sapphire Radeon HD 4670 1GB...

Instead of connecting you're fans to a single 4-pin molex on the power supply why not use the motherboards 3-pin molex fan connectors coming off the motherboard. See page 2.2.4 in your manual. Though I agree you should still be able to run 4-pin molex connectors to all fans off of you're PS. Allow the mother board to supply the 12v current to you're extra fans.
You're motherboard will supply the needed power. Less wiring will also allow better air flow through out the system and less strain to the fan controllers.
4-pin molex to 3-pin female;

Happy New Year!

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How to reset BIOS password on VGN FE880E End-user has locked the BIOS, and needs to reset it. It there a jumper like on most desktop PC's? Suggestions are appreciated. Thank You.

If you have forgotten your BIOS or system password, there are no software tricks or magical gimmicks that will get the password cleared. Laptops are different in that they are designed to not work with “backdoors” etc. for security reasons. There is one true way that works most of the time and that is hardware.
The Cmos (RTC) battery that is mounted on the motherboard in most cases holds the key, if your motherboard has the battery that is connected to the motherboard by using a two wire socket that plugs into the MOBO, then here is the procedure.
On the motherboard where the battery plugs into, you will see two pins sticking straight up, these engage the plug on the battery side. These two pins have to be “shorted” and then the motherboard powered up for approx. 30 seconds, then power down the system and replace the Cmos battery and reboot. Your password problem should be cleared up. The best way to “short” the pins is get another cmos battery and cut the wires from the battery part, bare the ends and twist together, this will short the pins. Make sure you tape the connection good on the jumper you just made….don’t want to touch anything else with powered up bare wires. Good luck.

Sep 26, 2009 | Sony VAIO VGN-FE880E/H Notebook

2 Answers

Recommended psu wattage inreplacement to 300watts psu for asusp4p800s-x

the needed wattage is directly linked to the componets you want to use other then the mobo itself. the main power surges are the CPU (takes 40 to 110 Watts) a graphics card (from 5 to over 150 Watts) the Drives (about 25-30 Watts eachs), the RAM and all the other addons and gadgets you build into your PC. Just add the different Wattages together and give it quiet some headroom. I usually drive this kinds of mobos with 400-550 Watts PSU to be on the save side, if i use a more or less "standard" graphics card, and even more with high sophistcated cards or lots of drives or such.

if you "see" low power (Volts) it might also be a problem with a partwise defective PSU.

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Virus (need to wipe cpu)

What you have to do is make a floppy disk with sata drivers on it and get a usb floppy drive, because its intel you need the matrix storage manager. get it from here:*+XP+Professional&lang=eng&strOSs=44&submit=Go!

Download the matrix storage manager and the read me file on instruction on how to install xp with extra drivers.

Any problems post back

Good luck

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Dell 5100 Dimension - No Power

there are fuses inside psu`s some are solderd and some pop out it i would suggest that u throw the psu away and buy new chances are that it will only cause continues and may even result in 
complete mobo failure problems heres a link to a cheap psu or a more upmarket more powerfull the choice is yours.

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