Power switch,reset switch,power led connections to motherboard?

They connect to the JFP1 connectors on the lower right edge of the board. The power LED connects to the 2 and 4 pins, The HDD LED to the 1 and 4 pins, the reset to the 5 and 7 pins and the power switch to the 6 and 8 pins. The pins are numbered up down right to left like this.
97531
08642

They connect to the JFP1 connectors on the lower right edge of the board. The power LED connects to the 2 and 4 pins, The HDD LED to the 1 and 4 pins, the reset to the 5 and 7 pins and the power switch to the 6 and 8 pins. The pins are numbered up down right to left like this.
97531
08642

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

http://www.coolermaster-usa.com/product.php?product_id=2949

So you're using the same CPU 4+4 Pin x2 power cable on both rigs?
(One of them)

Yes, I see it's a modular cable design, and the CPU 4+4 Pin x2 power cable, can be used as a single 4-pin ATX +12 Volt power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#eps4plus4

ALL Yellow wires are 12 Volt (DC) wires.
ALL Black wires are Ground wires.

ALL 12 Volt wires go to ONE single 12 Volt power rail, in the Power Supply, BUT; there is nothing saying an individual Yellow wire may be bad.
This is why I wondered if you are using the SAME power cable CONNECTOR. Same power cable.

Yes?
Then suggest it has something to do with the Active PFC circuit.

http://www.hardwaresecrets.com/article/Anatomy-of-Switching-Power-Supplies/327/6

Not aware of any setting to change in BIOS Setup utility - Power.

BUT, I do not know everything! lol!

IMHO there is no reason it will not work, unless as said; something to do with the Active PFC circuit.

From here let's hope someone who really knows what is going on, will post.

Regards,
joecoolvette

http://www.msi.com/service/download/manual-7462.html

At the bottom right hand corner of the mobo you'll find there is a set of pins marked JFP 1 and the power switch pins are marked clearly so are the HDD Led, reset, Power Led etc. Plug in your wires which are also marked, corresponding to the marked pins.

Download manual.
http://global.msi.com.tw/index.php?func=downloadindex

Hi swiftty6, you can download the manual for this board from this link. http://global.msi.com.tw/index.php?func=downloaddetail&type=manual&maincat_no=1&prod_no=558

Than go to pg. 2-18 for a better picture showing these case connections.
Like this.
Enjoy!
Mike

here it is your manual man
http://asia.msi.com.tw/index.php?func=downloaddetail&type=manual&maincat_no=1&prod_no=283

msi site your board/the manual..youll have there at the beginning the diagram of wires and pins..
I have a MSI too..great boards man..great boards..
fixya:)
bye