It should work with or without the Power LED.  But there are pins for it; you just have to find them.  For starters, you need  the "funs" working; I imagine you meant to spell that "fans."

Didn't the motherboard come with a manual and pictures [figures] where everything is?

If you plugged in the Power SW, the LED should come on for the electronic on/off crappy switches.

As a hot note:  find the wire for the cpu fan; this must turn on!  You will burn it up otherwise.
That is, get the board manual and read it.

u used any metal device(tester,screw driver etc.) and connect all led from that metal device. when system start from led than its ur Power SW led

Abs_jaipur: u used go get a class in English please and learn how to speak and spell in the English language.  I'm sorry, but you can't just abuse the language that badly and produce an answer to a question.  Besides the which, the advice you give is both too amateur and too dangerous.

Don't do that RCK95, you could burn up the motherboard.

Find out where the pins are.  I do wish manufacturers would supply better images on line.  Does your board look anything like this Tomcat?

http://www.Musics.com/Computer/Tyan/tomcatk8e_files/i_s2865.tif

If so, let me know.

The power led does not control the fan!!! You need to find the plug on the motherboard to plug your fan into otherwise you will burn up your motherboard. I tried finding documentation on the internet on your motherboard and could not find it so you should have a manual that tells you where that is located on your board. You need to do this quickly otherwise you will have one waste of money in your hands.

Link to Driver/Manual download page:

http://www.mercury-pc.com/downloads_list.php?productid=384

I had problems opening manual.  Maybe someone else will have better luck and can identify pins on board.

I managed to open it with microsoft word. It shows the front panel power led connection as pin2-pin4
Layout
Pin      Signal      Pin           Signal
1      HD_LED_P         2      FP PWR/SLP
3      HD_LED_N         4      P PWR/SLP
5      RESET_SW_N      6    POWER_SW_P
7      RESET_SW_P      8    POWER_SW_N
9      RSVD_DNU       10     KEY

Good.  Every time I tried to open it, Word took a dump.  May have been a bad download.

I couldn't open it with wordpad or notepad. Just the microsoft office Word program.

As I said, Word took a dump.  That's MS Word 2000.

Basically I don't need the Power LED connected in order for the computer to work?...Non woking fan has nothing to do with it right? Atleast I know now that the problem isn't Power LED pins. Btw, sparkmaker is righ about the pin configuration but I still could not locate Power LED but found everything else..Did I miss something?...

RCK95

2     FP PWR/SLP
                                 <<-----------are those for Power LED ?
4     P PWR/SLP    

I know my questions may sound really stupid if you are a computer expert..I do realize that :=)...Anyhow, I just want to let everyone from EE know that I really appreciate all the help. This is a great website with lots of great people who are willing to help others..I have joined EE for about 2 - 3 months now and there are so many people that have help me with all the computer problems..Money can't buy that !

RCK95

That manual is terrible.  Since the link is to their site, you should go their, join, and send them an email.

That manual was written in Adobe and then converted to Word 9.0, which is why it really sucks!

The images are in-line and can't be seen unless you have the proper Word, I guess; anyway, they make the file about 2 meg and so older Word can't handle it.

I converted it to HTML [Americans are smart, we compose documents in HTML because everything else is just a waste of everyone's time], and edited it.  I Googled about, looking for signs of intelligent life forms in Engineering.  Having found "none" in modern Motherboard Engineering Documentation, I jumped in my TARDIS and headed back to the "time before acronyms" in order to find out what "FP PWR/SLP," "P PWR/SLP," and other 'nyms meant.

I found a nice page with a picture and table, but, unfortunately, it too was 'nymmed.

http://www.ecsusa.com/support/p_p4s5a_fp.html

I therefore had to go further back to find out what "MSG LED pull-up to +5V" meant to the Neanderthals of the 21st Century.  It's the "MSG" you see, in the time before this 10th millenium, it meant "Micro Soft Gnomes," an outfit that cloned some very bad Borg type microporcessors [porc is a kind of cloned pig, the other white meat, used for 09M Cyborgs].

Before that, "MSG" meant "Mono sodium Glutimate," an icky substance of salt, glue, and sugar' etible, but not life-sustaining; also known as "pig-fat."

I think that "FP" is "floating power," "PWR" is "power," and "SLP" is "Sense Line Power."  Of course, I can't be sure without confirmation, but it makes sense to me.

The thing is this:

     If you have a case with one of those crappy "electronic on/off switches" then the LED, or,
     Light Emitting Diode, is not directly connected to the motherboard, rather, it is driven
     by the crappy electronic on/off switch.  Also, if you don't hook this up right, the
     computer may not turn on or off properly, or worse, it may burn up.

Which is why you must read the installation manual "THOROUGHLY!"

Since you have already turned on the computer with no cpu fan spinning, you either didn't wire something up, or worse, you wired something up incorrectly!

Your manual "should" define these 'nyms fully!  Not just say what they do, but break down the acronym into English.  This alone is a sign that Mercury hired a minimum wage writer to author
that piece of junk they call a manual.

your questions are not stupid; they are the everyday intelligent questions of everyday people that do not live in a world of 'nyms, but one where we all speak a good language that is not so easily misunderstood.

The pins are now "color coded" [Lord, have mercy!  McDonald's for motherboard installation!] and if you Google about for the information on the name of the signal, or the connector, in general, you'll find tons of information on them, mostly from people who have similar problems.

What it seems to be is some understandable confusion about the "crappy electronic on/off switch" which is both prone to burn up motherboards, and to possibly electrocute people, especially little people.

No one ever seems to make their photographs large enough either [film can do this, with a good scanner; digital cameras cannot].  It sure would be nice to be able to see the printing in these "manual" digital photographs.

I'll keeping looking for a definitive answer, if only to compose a nice email for motherboard manufacturers outlining everything they do that is stupid, while you google and read your manual, installation from start to finish.

All the other pins have an "N" for Negative and a "P" for Positive; therefore, I've concluded that the "SLP" must be "Sense Line Power" and that the Power LED is electronically controlled with the two signals going to the crappy electronic on/off switch [CEEOS pronounced 'chaoswitch'] which, according to :

http://forums.anandtech.com/messageview.cfm?catid=27&threadid=1683771

"FP PWR/SLP
 
Being that this 10-1 pin set is color-coded, the above 2 pins are color-coded green if I'm remembering correctly"

So, they should go up and to the power switch on the cable going to the front of the case; care must be taken here because that switch is actually an electronic circuit board with no fuse protection whatsoever and it can burn out just about anything, hence the name "crappy electronic on/off switch."

Be back later on this.

Thank you GinEric for your great Info.... I have another related question about the CPU fan...If the CPU fan is NOT working, will it prevent the computer to boot ?...Should I try another fan ?...Also what is a "Vcore power connector" and do I need it to connecte it to the mainboard(CPU is AMD XP 3000)?...I am just trying the eliminate possible cause of problems...Thanks

RCK95

The fan must work!

If it is not working, it will cause the cpu to burn up.

Yes, it certainly can prevent the system from booting up.  Most newer computers have a chip that detects the fan moving and will not boot unless it senses this.

I can't stand marketing newspeak; I have no idea what "Vcore" is, but I'll look it up.  This is just pure laziness on the part of the company making the power connector.

You think you have problems?  Look at this photo:

http://www.modthebox.com/review168_5.shtml

I can't believe computers in Canada are now starting to look like cars in California!  Check out the cooling hoses!

Exactly what happens if the hose springs a leak!

I do think the Vcore is something that perhaps powers the cpu itself, in which case, yes, it would have to be connected.

Make sure you read the manual!  And the fan must work!

Well if Vcore here means what it usually does, it's CPU core voltage (actual CPU operating voltage, e.g. 1.6 volts).

I have no idea what a Vcore lead is.  Vcore is produced by motherboard voltage regulation from 3.3 volt ATX connector input.

Wonder if it refers to 12VDC 4 pin auxiliary CPU power connector?  If so, it is not used on any socket A motherboards I've seen.

I took a look at a picture of your mother board and if yours is like my asus there is two connectors on that board that your power supply has to connect too. One for the main board and there is a small connector that has 4 connectors that connect to the cpu that powers the fan. Plug that one in too what is the wattage of your power supply? You should have an extra cable that just hangs there that looks like something you don't know what to do with. When you plug that into the motherboard everything should power up ok. I am sorry they did not give you a manual with that motherboard and you are having so much trouble with that motherboard.

Your power supplt needs the 4 pin 12v connector just behind the PS2 keyboard and mouse connector here is the mercury page with a pic of the board
http://www.mercury-pc.com/product-detail.php?link=p-mainboards&subtitle=Mainboard&productid=384#
If you click the specification button it calls for a  square 4-pin ATX 12V Power Supply connector, just like the intel cpu boards. If that isn't connected it won't start.

I just came up with another possibility for the acronym on the pinout
FP=front panel
PWR/SLP=power/sleep
some of the older boards would give this option when dual colored leds were in place for the MSG = message led
I guess Mercury(PC-chips) didn't hire new Quality Assurance people( if they ever had any to begin with) for there new line of boards, still using the old methodology of, less is more.(Money for them

Yes I also think Vcore is to power the CPU....Here is a strange fact...the power supply fan will not start if I have the Vcore power connector connected to the motherboard ,....And it will NOT light up my power supply tester either.....Once I disconnect the connector for the Vcore from the motherboard, the power supply fan starts working and my ATX power supply tester lights up all the LEDs....I am confuse about this :=(.....I have builded 2 similar AMD XP CPU computers with Gigabye and Asus motherboard without ANY of these problems...I really begining to hate this 'Mercury' mainboard.

RCK95

Better check to see if that PSU is compatble with the motherboard. I have seen them with 2 different types of 4pin 12v connectors. One of these 4pin connectors that I know won't connect to a P4 board but I have never had an AMD board with this vcore connector used.The pin out may be different for the AMD. Any thoughts on this experts?

Sorry, had a bit of a brain fart there.  I just realized that the extra 4pin I had seen was an addon clip to make a 20 pin atx into a  24 pin power connector for the newer motheboards. Apologies ~;)

Copied manual to a thumb drive and opened it on office PC that has MS Office 2003 installed.

It appears that J3 located in back corner near rear connectors is for a 12V aux CPU power connector.  First time I've seen one on a Socket A board.  Have latest, greatest Gigabyte KT600 board in shop and it does not have one.

Believe that pins 2 and 4 on front panel connector block are for power on LED.  Best I can tell from designation, they are used for either straight power LED or sleep mode enabled LED (turns amber when in sleep mode).  No mention on which is signal and which is ground, so just try both ways.  Won't hurt anything if you get it wrong.  Sparkmaker has it right, I believe.

I agree that manual is poor to say the least.

I have found one problem...The CPU fan were bad cause as soon as I replaced it with another fan, it started working. I have also found out that Vcore Power supply need to be connected to work. HOWEVER, I am still unable to boot the computer. When I start the computer, the CPU fan , hardrive and everything else seems to work but there is nothing on the monitor screen. And it's NOT the video card problem since I have tried it with both PCI and AGP Video cards that are working on other computer..So I know it's not the Video card problem. I think the CPU might be bad...How do it know if the CPU is dead?...my monitor light did not even change from standby yellow to green when i turn it on...Help..

RCK95

Did you check those jumper settings for your CPU frequency. If they are incorrect it will not start. You have to know the fsb speed of your CPU to set these jumpers.

I will check the jumper setting  and will post the results later..thanks sparkmaker

RCK95

Hi sparkmaker !! YOU ARE BRILLIANT..YOU DA MAN !!...My computer is woking now after following your advice...But others have also help me in so many ways as well...There is just not enough point for all the great people at EE..!!!  Many thanks to every one especially to 'sparkmaker ' & 'GinEric '....

RCK95




Quote from 'sparkmaker'  :


"Did you check those jumper settings for your CPU frequency. If they are incorrect it will not start."

"it calls for a  square 4-pin ATX 12V Power Supply connector, just like the intel cpu boards. If that isn't connected it won't start"

Thank you for that enthusiastic "thank you". Its a great feeling when you get it up and running, isn't it :)

Good job.  I'm thinking of getting an AMD 64 XP 3000 because I like everything I've seen about this chip.  But I like the Asus K8N w/754 [I don't trust the 939 socket yet].

The points are yours to use as you see fit.

Keep your eyes on that fan too, biggest problem if it suddenly goes out.

Thanks.