Question about Mercury P4VM800M7 Motherboard

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My Motherbraod no power

I have a problem of my motherbraod with no power i think it was damaged by electric fault

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Find the power switch wire on the power supply. (usually black and red, small connector). connect the 2 pints with a paper clip. see if the power puppl comes on. if it does, then, turn it off.
remove everyting that you have installed on the board. connect the power supply to the motherboard. make sure the CPU is in correct oriantation, turn on the PC. you should have the fan on and the indicator in the board lited. if not, try to run the board w/o the CPU. and if that still not coming on. then the board is cooked.

Posted on Oct 22, 2008

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My celeron m430 wont power up. The power light stays on but nothing else works and the screen remains off.

Fault with the main power supply. If the 12V supply line is absent, this kind of fault can happen. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.

Nov 21, 2014 | Motherboards

1 Answer

Computer will not restart

Computer does not boot up The problem maybe the RAM, it could be faulty or just needs reseating to make proper electrical contact.
Reseat the RAM and then boot up your laptop. If it still does not boot up then remove the RAM module/s and take them to your friendly computer repair shop and get them to test the RAM for you. Just like you sometimes need a mechanic to repair your car, sometimes you do need a technician to diagnose and identify the fault or faults on your computer. Not only does a good service technican have the experience to deal with this type of problem, they also have the equipment that allows them to look at things the average computer user can't see, and he has a collection of replacement parts that can be used to quickly test individual components on your computer.

Mar 10, 2013 | Motherboards

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I need the electrical diagram of ASUS P5 LIFESTYLE motherboard to verify the electrical circuits and capacitors. thankyou. my email:

I have never seen or heard mention of an electrical diagram for a Motherboard.
I have twice repaired motherboards, a broken trace, and a burnt power supply connector, and i know of one firm that routinely replaces capacitors with bulging tops, but those faults were evidenced by physical damage.
You could try testing capacitors with an ESR meter, but it would not tell you which of a set of capacitors in parallel was faulty, just that one was.
With a multiple layer motherboard it would be difficult or impossible to track down a fault through testing, or to repair it once it's existence has been established. And if you are charging for labor it is cheaper and more reliable to replace the motherboard.

Feb 09, 2011 | ASUS AI Lifestyle P5N32-E SLI...

1 Answer

How to correctly attach usb 1 and 2 cables from front of computer to foxconn motherbraod a6gmv

Foxconn Support > A6GMV motherboard > Main Support page,

Click on Motherboard Manual

On the next page go down to the heading > File Download
At the end of > Motherboard, Socket AM3, Motherboard Manual, click on > View Detail
Finally go to the right of Download, and click on the blue Zip Disk icon.

In the small window that comes up >
Opening Motherboard_AMD_Socket
,make sure there is a green dot in the circle to the left of Save File.

If not, left-click on the empty circle to the left of Save File.
Now go below, and click on OK.

A small window will come up. Observe the heading at the top of the window.
It may have Desktop, or My Documents, or Downloads, in the heading.
This is where the zip file will go to.

(Desktop screen.
Or Start> My Documents {Documents for Vista}
Or Start > My Documents > Downloads)

When you see the file Double-click on it.
Click on Unzip
Go to the top left, and click on Extract All Files
Click on the file name. (Next to the Adobe PDF icon)

Section 1:15 (Sec1:15)

There are Two green USB headers that are parallel to the bottom edge of the motherboard.

Looking at the USB headers there are two rows of pins.

The Top row of pins is numbered Evenly
The Bottom row of pins is numbered Odd.

On the Top row starting from the Left side of the motherboard, going towards the Right,
Pins 2, 4 ,6, 8, and 10.

On the Bottom row starting from the Left side of the motherboard, going towards the Right,
Pins 1, 3, 5, 7, and 9.

BOTH are numbered the same way.

EACH USB header can provide Two USB ports.

A) Pins 1 and Pin 2 are VCC

B) Pins 3 and Pin 4 are D -

C) Pins 5 and Pin 6 are D+

D) Pins 7 and Pin 8 are Ground

E) Pins 9 and 10 are not used. (Actually there is NO Pin 9)

USB pinout,

Another USB pinout,

One more time with details explaining the different types of USB styles,

Follow the color code of the wires in the cables coming from the USB port.

Use a multimeter to test each wire, if you are not sure what wire goes to what pin in the USB port.
Perform a continuity test with the multimeter set to OHM's.

Touch the individual wire in the USB cable, coming from the USB port, with the Positive (Red) probe lead.
Now touch a pin with the Negative (Black) probe lead of the multimeter.

When the meter scale shows continuity, you know what pin that wire goes to.
Write it down. Mark the wire with a small piece of masking tape, write on the tape what pin the wire goes to.

VCC, D-, D+, or Ground. (GND)

Have further questions regarding this post in a Comment.

Nov 26, 2010 | Motherboards

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No beep no display


If you have had an electrical power surge.
It,s for sure that you have caused damage to the Motherboard-CPU And possibly The RAM ( Memory ) There is no fix for this. I,d suggest New Power Supply Unit. New Motherboard. You can then Try The Memory And CPU On The New Board/PSU.
You may be lucky And the memory and CPU May have survived.
It seems as if the motherboard has suffered the damage.
I,d also suggest investing in a surge protector also, once bitten twice shy.

Mike @ compurepair.

Dec 15, 2008 | Foxconn Motherboards

1 Answer

Power problem

take every thing you have installed on the board off. power it up. if it comes up, install one item at a time and narrow the problem.
make sure your CPU is in correct orientation. and the power supply are correctly connected ot he board.
the fan on the CPU should come on when you power the board, and a indicator on the board should liteup.
if nothing happen. then you cooked the board.

Oct 22, 2008 | Mercury P4VM800M7 Motherboard

1 Answer

Mainboard dead i need super help to prove wrong the people who blame it on me istead of agreeing..

I'd recommend using a known good power supply, a known good PC speaker, and a digital multimeter.

Search for the voltage regulators (usually have a small heatsink attached) and any voltage converters (usually close to some coils of wire wrapped around a ferrite "donut"). Look up their datasheets online, and check the voltages into and out of each of them. If the voltages are okay, listen for any beep codes when powering up. If that doesn't work, consider buying a "Post Card" - Power On Self Test Card. You plug it into the PCI or ISA sockets, and it will show you a numeric code to indicate how far the power up sequence has progressed. Retail for about $20 to $40 CDN.

Sep 17, 2008 | Gigabyte GA-M57SLI-S4 (4719331821180)...

1 Answer

Am2 sli fault

does ur monitor light blinks if the monitor light blinks remove ur memory card and cleant the dust on the card and insert the memory card i think it will work

Nov 26, 2007 | ASUS M2N-E SLI (M2N-E SLI GREEN)...

2 Answers

Hdd damage and possible cause

Like you suggested, a surge could have damaged the hardware. Did you have an electrical storm recently?

Oct 06, 2007 | Intel D915GAGLK (MB77IN91GAGK) Motherboard

1 Answer

H8DAE-0 Fan issues, stopping and starting.

Sounds as if you have a motherboard fault or a processor fault, as, if the processor is faulty, everything will stop, especially if the temperatures arent being read correctly by the motherboard causing the system to shut down before any damage is done.. It's a process of illimination i'm afraid

Aug 21, 2007 | SuperMicro H8DAE Motherboard

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