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E-MACHINE T5248 AFTER I ADDED AN INTERNAL DRIVE THE COMPUTER WILL NOT RUN. THE LED ON THE FRONT SWITCH IS OFF BUT THE FUN IS RUNNING PROVING THAT IT HAS POWER ON THE THE MOTHERBOARD...PLEASE HELP...THANKS

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  • Master
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How old is the machine???
what kind of hard drive??? IDE or SATA
the newer machine do not need hard drive configuration. but not the old one.
configure the old hard drive to "master" and the new hard drive to "Slave".
go into BOIS and make sure both hard drives are being detected by the machine.

Posted on Oct 23, 2008

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Gateway DX4822-01 power switch problems


The front of your computer is the Front Panel.

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.

Main wires such as Power On LED, Power On switch, HarDDrive activity LED, and Reset switch; IF used.

Suggest KEEP track of where those wires go!

Make a drawing, and notes. I even use a magic marker, (Sharpee?), and make a notation of the Front Panel header pinout, on the floor of the computer case.

In this particular case it isn't known if the Power On switch is the problem, or the Power Supply.

Power On switch;
Power UNPLUGGED to computer, Anti-Static Precautions FOLLOWED; (Don't know? Post back in a Comment),

Remove the twisted pair of W/B and W/G wires, to the Power On switch pins, in the Front Panel header.

Plug power back into computer.
Use a small flat tipped screwdriver, and touch the two Power On switch pins. (Jewelers screwdriver works well for this application)

Power Supply comes on? Bad Power On switch.
Allow Windows to fully load, run for a few minutes; then turn the computer off normally.

Jump the two Power On switch pins again.
Power Supply comes on? You DEFINITELY have a bad Power On switch.

Power Supply does NOT come on?
We will go to a further diagnostic test then.
Awaiting results for first test, then we will go on.

Post back in a Comment.

Regards,
joecoolvette

[Also; is the computer dirty inside? ]

Feb 19, 2013 | Acer Computers & Internet

2 Answers

Front panel connections


I don't find the Front Panel header pinout online, nor do I have an MSI MS-5191 in the shop.

I would suggest using one the LED lights with two wires.
(3-wire is a dual color LED)

There are two rows of pins. Usually the Power On switch, Power On LED, and Speaker; are on the same row.
HarDDrive activity LED, and Reset Switch are on the opposite row.

Speaker has 4-pins designated for it. All the others use 2-pins.
(Unless the PWR ON LED is a dual color jobbie)

Touch two pins next to each other, in the same row; with the 2-wire LED.
Start with finding the Power On switch first.

Usually the top row 1st two pins are Power On LED (Light)
Next in line are the 2 pins for the Power On switch.
Bottom row 1st two pins are usually HarDDrive activity LED (light)
Next 2-pins are usually Reset switch.

May not apply to a motherboard old enough to use a Socket 7 processor socket.
There may be 18 to 20-pins.
Bear in mind that many are not used, and probably 4 are for an internal speaker, for hearing BIOS Beep Codes.
May be two separate Front Panel headers.

Once you find the two contact pins in the Front Panel header, for the Power On switch; I would put the Power On switch wires on.
The small pin connector on the wire/s, will keep you from accidentally touching these two pins again, when the computer is on.

Now you have the two pins for the Power On switch, and the computer is running; then keep touching 2-pins at a time with the LED. (Light Emitting Diode)

LED stays on? You have the Power On LED (Light) pins.
LED blinks? HarDDrive activity LED (light) pins.
Computer restarts? Reset switch pins.

Look for abbreviations near the pins in the Front panel header.

PWR, Pwr, Pwr On, Sw, and SW; are just some of the abbreviations for the Power On switch.

HDD LED, and HDD are two for the HarDDrive activity LED. (Light)
(If it states HDD SW it is the Power On switch. Weird old way of marking)

RST, Reset, and RSW, are for the Reset Switch.
(Reset Button)

If you see 4 pins marked with a bracket ( [ -> Turn so it's horizontal), these are for the internal speaker.

Type MSI front panel connector in your search bar, and look at -> images. See if you can find an image of your MSI Front Panel header pinout.

You can bet MSI carried out that Front Panel header pinout, on other MSI motherboards, besides the MS-5191.

The MSI MS-5191 may have been a motherboard made by MSI, especially for a pre-built computer manufacturer, and not listed on their website as an OEM motherboard.
(Original Equipment Manufacturer)

Won't have the Front Panel header pinout, listed on MSI's support website. (Doesn't)
But you can bet there IS an OEM motherboard made by MSI, that the Front Panel header DOES match.

May be different expansion slots, or motherboard chipset, or whatever; but the same Front Panel header pinout.

Regards,
joecoolvette

Jan 05, 2013 | AMD MicroStar MS-5191 Socket 7 mATX...

1 Answer

9VJL3 front panel


Do not have the Front Panel header pinout.

Do have;

Take an LED (Light), with two wires, and check the pins with it.
There is a Top row of pins, and a Bottom row.

Touch the first two pins in the Top row, left side. Does it light up?
No? Go to the next two pins. No? Go to the next two pins.

Keep going until the Power Supply comes on. (It is a BRIEF touch. The Power On switch is a Momentary Contact Switch )
Now you have the Power On switch pins.

LED light blinks? You have the Harddrive activity LED. (Light)
LED light stays on? You have the Power On LED. (Light)
Computer restarts? The Restart switch pins.

Short something out? NOPE. You can't hurt a thing using this method.

4 of those pins are for an internal speaker. (To hear BIOS Beep Codes with)

That's 12 of those 18 pins. (Probably less. It is two rows of 9 pins, that are stated for the Front Panel header)
4 of those pins probably won't be used.
You won't be using IR. (Infra Remote) (Only uses 2 pins, though)

Most of the time with an 18-pin Front Panel header;

Top Row:
Starting at Left side, going towards Right;
Pins 2, 4, 6, 8, 10, 12, 14, 16, and 18.
May be a pin missing in this row, or two.

Borrom row:
Starting at Left side, going towards Right;
Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.
Same thing here. May be 1 or 2 pins missing.

Pins 2 and 4 are usually for the Power On LED. (Light Emitting Diode)
Pins 6 and 8 - Power On switch.
Pins 10, 12, 14, and 16 may be for the Internal speaker.
Pins 18, and 20 are usually not used.

Pin 1 and 3 for the HarDDrive activity LED.
Pins 5 and 7 for the Reset switch.

Pin 9 is usually reserved for the factory, and is a 5 Volt test point.
Pins 11, 13, 15, 17 for speaker; or not used. Same with pin 19.

(So speaker pins may be top row, or bottom row. Dunno )

Another thing. This motherboard is old enough to be using a 3 wire LED, or dual color; for the Power On LED.
LED usually had the colors Green and Yellow.
Yellow for 'Normal' mode, Green for 'Turbo' mode.

(Which is a bunch of cr@p.
Green LED, or Turbo Mode; was actually NORMAL.
Normal mode was the computer operating BELOW the Normal mode)

So pins 2, 4, and 6, may be for a 3 wire Power On LED.

Regards,
joecoolvette

Dec 22, 2012 | Chaintech 9VJL3 P4(478)/VIA Motherboard

1 Answer

Need circuit diagram for HP m8100 GC673AA


HP Support > Pavilion Media Center M8100n Desktop PC > Main Support page,

http://h10025.www1.hp.com/ewfrf/wc/product?product=3440614&lc=en&cc=us&dlc=en&lang=en&cc=us

Product information > Product specifications > Motherboard Specifications, MCP61PM-HM (Nettle2 {HP name} ),

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01077676&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3440614

The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the Main wires connect to, is the Front Panel header.
(Power On switch, Power On LED, HarDDrive activity LED, etc)

The Front Panel header is Black, rectangular in shape, and is situated in a vertical position; located in the Bottom Right corner of the motherboard. (Next to the mounting hole)

It is a standard 9-pin HP Front Panel header,

http://h30434.www3.hp.com/t5/Desktop-Hardware/Getting-a-new-case-i-need-Front-Panel-pinout/td-p/842897

Scroll down to the 9-pin Front Panel header photo, and pinout.

The 4-pin side is the EVEN side. Pins 2, 4, 6, and 8. There is NO Pin 10.
The 5-pin side is the ODD side. Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light Emitting Diode, so it is redundant to call it a light)

Pin 1 is for the Positive ( + ) wire.
IF the HDD LED is dim when the harddrive is active, (IN use), switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C. Not Connected. Reserved for factory use, and it is +5 Volts.

D) Pins 2 and 4 are for the Power On LED.
Pin 2 is for the Positive ( + ) wire.
If the PWR LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

Scroll the HP Support Motherboard Specification page down. Click on the + sign next to Motherboard Layout.

Left to Right on bottom edge of motherboard, Internal Connectors;

AUDIO_1 is for the audio ports on the Front Panel.
ATX_IN is where the small audio cable from the optical drive plugs in.
(CD/DVD drive)
IF TWO optical drives are used; the Main, or Primary optical drive, is connected with the small audio cable. NOT the secondary optical drive.

HD_AUDIO also connects to audio ports in the Front Panel.
May be mistaken, but don't believe SPDIF_OUT header is used.
1394A1 header is for the Firewire ports in the Front Panel (1394a)
USB 2 and USB 4 headers are for the Front Panel USB ports.
USB 1 and USB 3 should be for a Card Reader.

Need where the power cables go, and what they look like? Just post back in a Comment.

(Be SURE to FOLLOW Anti-Static Precautions)

Regards,
joecoolvette

[ Didn't think you actually wanted an actual circuit diagram. That is copyrighted by HP, and Elitegroup Computer Systems. (ECS)

Dec 03, 2012 | Computers & Internet

2 Answers

H61H2M2 Motherboard F_panel


Hello the manual can be downloaded here:

http://www.ecs.com.tw/ECSWebSite/Downloads/Downloads_Driver_Detail.aspx?detailid=1228&MenuID=0&LanID=0



11_24_2012_6_17_42_pm.jpg


11_24_2012_6_18_14_pm.jpg


Hard Drive Activity LED
Connecting pins 1 and 3 to a front panel mounted LED provides visual indication that
data is being read from or written to the hard drive. For the LED to function properly,
an IDE drive should be connected to the onboard IDE interface. The LED will also
show activity for devices connected to the SCSI (hard drive activity LED) connector.
Power/Sleep/Message waiting LED
Connecting pins 2 and 4 to a single or dual-color, front panel mounted LED provides
power on/off, sleep, and message waiting indication.
Reset Switch
Supporting the reset function requires connecting pin 5 and 7 to a momentarycontact
switch that is normally open. When the switch is closed, the board resets and
runs POST.
Power Switch
Supporting the power on/off function requires connecting pins 6 and 8 to a momentary-
contact switch that is normally open. The switch should maintain contact for at
least 50 ms to signal the power supply to switch on or off. The time requirement is
due to internal de-bounce circuitry. After receiving a power on/off signal, at least two
seconds elapses before the power supply recognizes another on/off signal

Good luck

Nov 24, 2012 | EliteGroup ECS H61H2M2 Intel H61 Sandy...

1 Answer

DELL GX 520 Motherboard power led is orange, power button led is orange, the fun is running, no beep, no display....somebody help me with this dell gx520. sometimes it displays 3 and 4 lights on the front...


you should replace the motherboard or the power supply of your computer. to determine which one to replace is a simple test. disconnect all that is connected to the motherboard and if the problem is still there, then the problem is the motherboard.

May 06, 2011 | Dell OptiPlex GX520 PC Desktop

1 Answer

Gateway mx6448 Notebook will not power on, Red LED flashes 4 times when power on button is pressed then nothing happens. It is the same with only the battery. LED will not flash if I have only the power...


There can be many things associated with no power to the computer.
  • The outlet into which the computer is plugged may be inoperative.

  • The surge protector you are using may be inoperative.

  • The power cable may be loose or damaged.

  • An internal device may be damaged.

  • The power supply may be inoperative.

Basic Troubleshooting Power to the Computer
There may not be a consistent flow of power to the computer.
  1. Verify that the outlet into which you are plugging the computer is operational.

  2. If you have the computer plugged into a surge protector, plug it directly into the outlet.

  3. Verify that the power cable is plugged securely into the back of the computer.

  4. If you have a monitor with a removable power cord, swap the power cords between the monitor and the computer.

Note: If you recently added a new hardware device prior to experiencing the no power issue, turn off the computer and remove the newly added hardware. If there is still no power, reseat all the other cards and cables in the computer to verify that all other devices are seated securely.
Resolving Power Supply Issues
  • External Device Conflicts
  • There may be an external device causing the computer not to turn on properly.

    1. Before continuing, verify your computer is turned off.

    2. After you have established that adequate electricity is going to your computer, verify that the voltage switch on the back of the power supply is set correctly. The small red switch is to be set to the 115-volt setting.

    3. Remove all external devices except the monitor and turn on the computer. If the fan on the back of the computer now spins, turn off the computer. Plug in the external devices one at a time and turn on the computer after each device is added.

    4. Note: If you removed all external components and the fan on the back of the computer does not spin, the problem is with something inside the computer.

  • Internal Device Conflicts
  • This helps determine if the issue is a damaged or badly seated component.

    1. Verify that the computer is turned off.

    2. Remove the case from the computer.

    3. Remove all the red, yellow, and black power connectors from each floppy disk drive, CD-ROM drive, and tape backup unit that is in the computer. The only devices connected to the power supply are your hard disk drive and motherboard.

    4. Turn on the computer and verify that the fan on the back of the computer spins. If it does not spin, turn off the computer.

    5. Remove the power connection from the hard disk drive and reconnect power to one floppy disk drive. Turn on the computer and verify that the fan on the back of the computer spins.

    6. Reseat the power connection from the power supply to the motherboard. Turn on the computer and verify that the fan on the back of the computer spins. If the power has been restored, turn off the computer and reconnect the power connections to the devices. Test the computer for power after reconnecting each device.

  • Power Switch
  • The power switch may not be functioning properly.

    1. You may need to open the case and readjust the power switch.

    2. Locate the control panel inside the computer and remove any screws holding it in place.

    3. Turn on the computer with the control panel removed by pressing the button on the control panel that corresponds to the power button. If the power supply fan spins and/or the computer turns on, put the control panel back in its place. Try to turn on the computer again.

  • Test Switch and Diagnostic LED
  • Note: Not all power supplies have a test switch and diagnostic LED.
    Certain power supplies have a test switch and LED to help better troubleshoot the device. The green LED is always on when the computer is powered on. If the computer is not receiving power please perform the diagnostic test below.

    1. Verify that the computer is turned off.
    2. Remove the case from the computer.
    3. Remove all of the red, yellow, and black power connectors from each floppy disk drive and ROM drive and the tape backup unit (TBU) that is in the computer. Remove all power connectors from the motherboard. The only device that needs to be connected to the power supply is the hard disk drive.
    4. Press and hold the test switch for five seconds on the power supply, and then verify that the green light on the power supply comes on.
    5. If the light comes on:
      1. The power supply is good and something that was plugged into the power supply is causing the computer to not turn on.
      2. Plug devices in one at a time, testing with the test switch between each device to determine what is causing the power issue.
      3. If all devices are plugged in and the light is working, the connections may have needed to be reseated, or it is possibly a power switch issue.
      4. Go to the power switch section of the power supply checklist for additional troubleshooting steps.

    6. If the light does not come on:
      1. Disconnect the power from the hard disk drive, and then plug in power to the CD-ROM drive and determine whether the light comes on.
      2. If it does, follow the preceding information - "If the light comes on."
      3. If the light still does not come on, contact Gateway Technical Support.

    7. Confirm that power from the power supply is connected to the motherboard. Remove all cards and cables from the motherboard, and press and hold the test switch for five seconds on the power supply and determine whether the green light-emitting diode (LED) comes on.
    8. If the LED comes on, put the devices back in one at a time, testing between each device to determine what is causing the issue.



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Dec 02, 2010 | Gateway MX6448 Notebook

1 Answer

My HP Pavilion a1050y won't boot up.


So you've checked the supply, but you didn't replace it, right? Sounds to me like that's your culprit. It's not able to supply the current to run the processor (the biggest draw) and the output is dropping too low to run the system. A new supply should get you running again.

Mar 06, 2010 | HP Pavilion A1050y (PU131AV) PC Desktop

1 Answer

How do i plug in power button in on mother board? Lost my manual so I can't find the model #. I was just switching my mother board and all other hardware to new case and my power button (or switch or...


> power led,

Runs to the LED (Light Emitting Diode) labelled "power" on the front of your computer-case

> H.D.D led,

Runs to the front-panel LED that lights-up whenever the Hard Disk Drive is being used.

> reset sw,

Runs to the "reset" button on the front panel.

> speaker

Runs to the internal speaker

> s/b sw

Very briefly touch a metal-tip screwdriver between these 2 pins.
If the computer powers-on, you've found the "power" connector.



Nov 06, 2009 | Intel Motherboard

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