New motherboard will not power up. Power supply OK, No manuals or CD. Need pinout and label on Motherboard for motherboard to case connections for an ACER ECS EG31m V.1.0

1. Identify the headers: Locate the front panel headers on the new case and on the motherboard. Make sure that you have identified the correct headers and that they are compatible with each other.
2. Check the pinout: Refer to the manual for the new case to determine the pinout for the front panel headers. Make sure that it matches the pinout listed for the motherboard, as mentioned above.
3. Connect the wires: Use the pinout information to connect the wires from the new case to the appropriate pins on the motherboard. Make sure that each wire is securely connected and that there are no loose wires that could cause a short circuit.
4. Connect the HDD LED: The HDD LED can be connected to pins 13 and 14 of the front header (LEDH1).
5. Connect the power LED: The power LED can be connected to pins 3 and 4 of the front header (LEDH1).
6. Connect the reset switch: The reset switch can be connected to pins 7 and 8 of the front header (LEDH1).
7. Connect the power switch: The power switch can be connected to pins 10 and 11 of the front header (LEDH1).

Make sure that you connect the wires correctly and securely, as an incorrect connection can cause damage to the motherboard or the front panel components.

Intel 945GCT-M3 motherboard,

http://support.gateway.com/s/MOTHERBD/Shared/4006188R/4006188Rmv.shtml

Above shows main view, and is labeled.

http://support.gateway.com/s/MOTHERBD/Shared/4006188R/4006188Rnv.shtml

Click on Product Views for Pinouts and connectors for;

1) 4-pin ATX +12 Volt power cable; B - Processor Core Power Connector

2) Processor fan cable connector on motherboard; D - CPU Fan Connector

3) 24-pin ATX main power cable; F - ATX Power Connector

4) Floppy Drive 34-pin connector on motherboard; G - Floppy Disk Drive Connector

5) CD/DVD drive that is IDE (PATA) type -> connector;
H - Parallel ATA IDE Connector. (Harddrive goes to SATA connector)

6) Computer case fan connector; I - System Fan Connector

7) Audio connector on motherboard for CD/DVD drive's small audio cable, (Main drive if there are two)
M - AUX-IN Connector

8) Front Panel is front of computer.
N - Front Panel Audio Connector is where the front panel audio ports connect.

9) R - USB 2.0 Connectors = Front Panel USB connectors on motherboard

10) Front of computer is the Front Panel. Area of contact pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header.

T - Front Panel Connector = Front Panel header

Motherboard manual from ECS Support,

http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=719&CategoryID=1&MenuID=16&LanID=0

(Note photo is distorted. Click on - More pictures for clearer view.
{More pictures / Where to buy / Print )

Click on the Download tab.
(Features / Specification / Download / Support / CPU / etc)

Click on Manual.
(Driver / BIOS / Manual)

Scroll down, click on the country NAME nearest yours.
A PDF file motherboard manual will come up.

For additional questions please post in a Comment.

Regards,
joecoolvette

You can actually test the power supply before connecting it to the motherboard. Take a look at the power supply pinout by CLICKING HERE. Jump pin 14 with 13, 15, 16, or 17 to turn it on. You will have to get a manual for your motherboard to see how the front panel connector is configured with your case power switch. If you have that manual you can jump the 2 connector pins for the power switch to test the p/s from the motherboard.

There should be some white writing on the motherboard at the bottom right labeling where the cables plug in. The motherboard manufacturer should also have a manual showing the pinouts on the motherboard.

if that does not help try
http://www.fixya.com/uploads/images/273B68A.JPG
or
http://image.pinout.net/pinout_4_pin_files/intel-front-panel-pinout.gif

You need to specify the motherboard's make & model in order that I could provide you with further assistance.

Hi:
I have only worked on one of these Sony desktops, and it is really very proprietary, where you would be better off buying a new case to install a new motherboard in. The sony looks really slick, but everything about it is odd: The power supply, the cooling fan for the cpu, etc. It would be a lot easier to save what you can and move it to a new project!

you can check the MB pinout diagram from their website. The powersupply connector generally of a unique size and you can easily identity by the pin numbers and safely connect it, as you cannot insert it in a wrong direction.

Sounds like the first thing you need to check is if you are getting all the voltages out of your power supply.

Here is a link to the pinouts of the connectors. if you have a faulty PS replacing the CPU or motherboard will not help.

http://www.helpwithpcs.com/courses/power-supply-basics-inc-pinouts.htm

Is there a green LED on your motherboard at all?

You said the fan comes on. Which fan? You should have a CPU fan, a case fan, and a power supply fan.

Take a picture of the inside of your computer and put it up on the website with the wire connectors that need to be connected. The connecting wires should be in four groups. 1. The power supply connectors. These connectors will supply power to to all the power using components not supplied power by the motherboard itself. 2 The connections to the other components in your system like the dvd/cd player and the harddrive and floppy drive.3. The motherboard connections for the case. The power switch connector andreset switchconnector. The power led and theharddrive activity light.The USB connector and the audio connector.The fan connections like the cpu fan and other fan only connectors found on the motherboard.The external fans ( Fans that need to be connected to the power supply).Most of these connections are labeled on the motherboard. The case connectors also should be labeled for the correct connection. The best way to find the answers to this hook-up, may be to call HP pavilion with your computer make and model number,motherboard model number including revisions number. Computer made by big manufacturers tend to have may revisions and the only way to make sure your are getting a correct hook-up to the motherboard is call them for assistance.Especially if the motherboard and case labels are not present or so small that they cannot be read.Hope this helps you with your problem.

check conections, did you isolated bolts while you ware inserting mother board? check condensators on mother board if there are some leeks... if this is the case ,,, buy a new mother board? is mother board new?