We are piecing together a desktop computer and we need a diagram that will show us where the cords from the power supply plug into the mother board and where each of the 3 grey ribbons plug into the mother board this is the first time actually piecing together a computer from scratch. so we basically need a diagram showing where all the different cords or wires go on the motherboard there is no name brand as we are piecing the computer together

If you can open up your PC, disconnect the power supply to motherboard plug and try power on again. If still the same replace the power supply. Draw a diagram of connections from the power supply to the mother board.

Sounds like a bad power supply or possibly bad mother board. Make sure the fan in the power supply comes on when you plug it in. Also if, you are game, look inside the PC and make sure the power supply is plugged into the mother board and not loose.


Hope this helps rate if it does please.

It sounds to me like it overheated and something burnt out, but I could be wrong. The main pieces in a desktop computer are: power supply, motherboard, cpu, ram, and video card (which is on the motherboard for lower end systems.)
Each one will need to be properly tested to find out which part(s) is(/are) failing, and the failing part(s) will need to be replaced.

How do you know the power supply is the problem?
What issues are you experiencing?
Have you done any trouble shooting first? It could be a bad hard drive.

If you should need to replace the power supply first you need to get a replacement power supply for a gateway MFATXPNT ESX 500S - 300 watt power supply you can get here.

The next step is to unplug the computer from the wall > remove the case side access panel > ground yourself with an Anti-Static wrist strap cord so you don't fry *********** board electronics from static electricity discharge which can cost you a lot more to replace > now disconnect the plugs from the power supply wire harness, it may help to count the connections and mark them with a piece of tape or draw a diagram so you don't forget which loose cables should get reconnected to the new power supply. There will be at least one that connects directly to a plug on the mother board, DO NOT put tape there. > Next remove the screws which mount mount the power supply to the metal frame and slide out the power supply > slide the new power supply in the same way the other other was removed (note top from bottom) and then screw back to frame and reattach the cables > close the case > remove your grounded wrist band > plug computer back into wall and start the computer.

Congratulations, you have just replaced your power supply and ready to go.

IMPORTANT: Do not switch the power output selector switch on the power supply. Usually a recessed re switch which will adjust for european vs. US power input conversion.

Additional Resources and Tutorials
Step by Step Video Tutorial to Replace Power Supply
With pictures, step by step
Diagnosing ATX Power Supply Failure with Diagram
How to diagnose and replace a failed pc power supply

Hope you find my resources and information useful and rank or review it accordingly.

Could be power supply, unplug every thing from the board, remove all drives, cards everything but the mem. turn it on, if you get some beeps, add your Hard drive. The power supply may not have the guts it take to run all the peripherals it used to, this test will tell you if its the board or power supply.

Sounds like there maybe some kind of problem with *********** board connector. Double check that it is the right size, and be sure there are no places that still need power. When you get the chance I'd check the following:
Disc Drives
Motherboard
Floppy
Hard Drives
That all cards are secure, if there are any loose connectors your comp will declare "short circuit". At that point, unplug the cord from the mother board (the power cable) and try again.
Any USB Cables
Anything that looks loose, and finally, recheck the compatibility with your system.

Good Luck!!!

I would suggest trying to replace the power supply. If that does not fix the issue, i would need to hear more about the computer.

Is there a power switch on the back of the power supply which is not on? Make sure the power cord is good and plugged into a good power source. Do the fans run inside the system? Is the fan for the power supply working? If not the power supply could be bad. You can purchase a power supply tester to plug the mother board connector into to verify the operation for about $15.00. Do you see any lights on the mother board and the Hard Drive light flickering? If you do and your Key Board lights are on your video controller or monitor could be setup wrong or defective. If the power supply tests good then you need to test the memory and CPU. You could also carefully remove all boards except the video card, mother board and memory and see if it boots up.

Is the cord broken in the computer, or the monitor or the pin broken and stuck in the machine? If it is in a desktop it goes into the power supply. Which you can change the whole power supply fairly cheap. that is if it in a desk top computer. 4 screws, 4 or 5 connectors and ta da new power supply, All you need is readings off power supply such as wattage. Good luck

THANHTHHP, memory is very important to start computer.Some cpu's need a minnimum [a pair] 2 memory sticks
Do not plug the power supply ONTO the mother board. Do plug the a/c power cord in back of the power box, turn it on.Does the fan turn on [spin] and u feel air coming out? If fan is on, that is good. If fan is NOT on, that is not too bad because some power supply NEED to connected to the mother board for it to have a path.The power supply can SHOT DOWN if connected wrong or there is a short on or in the mother board. Look to see if ANY piece of metal, one of your screws fell in between metal contacts.,Did u put the computer together yourself? Look to see that the contacts [under the board] are NOT shorting where the screws that hold the mother board down to the chassie body