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Gateway GT1040 will not start

I have a Gateway GT1040 which will not turn on. The power supply was tested by jumping a green and black wire which brought the fan to life. The machine was unplugged and the power button pushed for five seconds. The memory and cards were all reseated. All cabling/wiring has been checked for proper connection. Still, no LED light or power when pushing the start button. The kids tell me the machine was working fine and they noticed this yesterday when trying to boot up. Is there a way to test the Start button? Any ideas would be greatly appreciated. Thanks

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  • dugans15 Jan 09, 2009

    My mistake, Model GT4010

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Try shorting the power pins on the Motherborad. (establish contact manual. use screw drivers such that they touch both the pins). The power pins are the one the Start button are connected to. Remove this connection alone. If this powers up the system, you would have to get the Button replaced. Else there's something wrong with the motherboard. Kindly get back for any clarifcation.

Posted on Jan 09, 2009

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Start up light flashes once and it won't power on


Most probable cause is the power supply. Look at the back of the computer, check the voltage settings located near the power cord. This will be the small red tab indicating two different settings, If your in the US it should be set to 115. Also, the power supply should run the internal fan when it is turned on.

To test the power supply try this:

Open your computer case and locate the gray box that is the power supply unit. Trace the wires from the power supply to the boards and devices and disconnect all the cables by unplugging them.

Find the big connector plugged on the the motherboard, make sure it is disconnected and short the two pins: (GREEN & BLACK) Short green pin (14) to GND (any black) to switch power supply ON, disconnect green from GND to switch OFF.

This will switch the power supply, you should hear or see the fan in the power supply spin. If you do not see the fan spinning, and your sure you have shorted the correct wires, you have a faulty power supply. If you see the fan spinning, you can now test the voltage coming out of the power supply.

Place a volt meter on the following colors to test voltage:

The color code for the wires is: Red = +5V, Black = Ground (0V), White = -5V, Yellow = +12V, Blue = -12V, Orange = +3.3V, Purple = +5V Standby (not used), Gray = power is on (output), and Green = Turn DC on (input).

Feb 12, 2011 | HP Pavilion a6110n PC Desktop

1 Answer

My hp pavilion a430n is not turning on. even though i pressed the power button the light wont even turn on. it is truly annoying and the screen says something about the power supply and green, red, blue...


I suggest to open your computer and unplug your power supply and look for the color green and black cord which plugged from your motherboard. Then find a piece of wire and short the color green and black wire to test if your power supply is working and plug to your power socket. And check your electronic parts (capacitor) near at your processor, it might your capacitor blown out.

Nov 15, 2010 | HP Pavilion a430n PC Desktop

1 Answer

Power light on power supply is on, but won't turn on when you push the power button on the front of the computer. No fans run nothing.


Bad Power On switch. (Located inside the plastic Power On button), or Bad Power Supply. Weak voltage power rail.

Bypass the Power On switch to see if the switch is the problem, or the Power Supply.

To perform this procedure you will be using a jumper wire to touch the Soft Power On wire's terminal contact, (PS_ON. Green wire), to ANY Ground wire's terminal contact, (Black), in your 24-pin ATX main power cable's connector. Brief contact, no more than 2 seconds.

Main power cable remains plugged in. The jumper wire can be a paper clip straightened out, then bent into a U-shape. The bend of the U is wrapped with electrical tape.

The legs of the U go down into the socket holes of the Green wire, and ANY Black wire. (ALL Black wires going down in that connector are Ground wires)

You have to make sure the jumper wire touches a metal terminal contact, that is down at the bottom of the wire.
The jumper wire is slid down next to the wire, in the socket hole.

The voltage is 5 Volts DC.
Two D cell flashlight batteries produce 3 Volts DC.

1) http://support.gateway.com/s/PC/R/1015003R/1015003Rnv.shtml

2) http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Sep 30, 2010 | Gateway GT5662 Desktop PC

1 Answer

Gateway 503gr has no power, the standby light flashes green when I remove power. Tried new PS and the standby LED stays lit. I then tried both new and old PS disconnected from board and shorted...


Disconnect everything from the motherboard except the power supply connections and cpu fan. Install one stick of RAM and connect your monitor. Then try starting up. See if you get any BIOS boot messages. This will tell you that the board and processor are okay.

With what you say you've tried already, I'm thinking you might have a bad processor. Most every other problem would result in some kind of error like POST beep codes or messages on screen. If the system still doesn't boot with the bare minimum parts installed, replace the processor.

Mar 02, 2010 | Gateway 503GR PC Desktop

1 Answer

Gateway fx400s dose not turn on


is it pluged in
is power bar turnt on
can you check the power supply conector for power
you have to shunt the green wire to a black wire to force the supply on
then use a volt meter to check red wire for +5 or +121 volts
dont remember witch is witch yellow and red +5 and +12
if the power supply is getting getting power from the outlet but not into the pc replace with a new one best of luck bye bye

Feb 19, 2010 | Gateway FX400S PC Desktop

2 Answers

Dell dimension 5510 it will not turn on, no


1/10th a volt? Nope.

Bypass the Power On switch. See if you have a bad switch first.

Then test the power supply. If the power supply comes on by bypassing the Power On switch, I'll bet you have a weak 12 volt voltage power rail.

1) Yellow wires are 12 Volts
2) Red wires are 5 Volts
3) Orange wires are 3.3 Volts
4) ANY Black wire is a Ground wire

They do sell power supply voltage testers, should you not wish to use a multimeter set at DC volts.
(0 - 50 Volt scale)

I prefer a multimeter.

A) ALL the light use less than 1 Watt
B) EACH fan uses 2 to 3 Watts

C) A typical Processor uses 55 to 125 WATTS.

You have to turn the power supply on, by jumping the Soft Power On wire to any ground wire.

This is also the way to bypass the Power On switch, to see if the switch is bad.

Do you wish to proceed?

Jan 15, 2010 | Dell Dimension E521 PC Desktop

1 Answer

Will testing the power supply by shorting the green wire with a black wire with a paper clip damage my system?


OH YES!!! dont even try that not only will it damage your system it might also damage YOU!!! if you are worried about your power supply check the connections from the power supply to the motherboard WHILE THE SYSTEM IS NOT PLUGGED IN!!! and if all connections are connected SECURELY than try to plug it into a different outlet

Oct 24, 2009 | Gateway GT4022 PC Desktop

1 Answer

How can i be sure that its the power supply or the motherboard that went bad? what can i do to find out?


If you have atx power supply, you can short the green wire with any of the black wires with a paper clip. if the power supply turns on, it is good.

Sep 30, 2009 | Gateway GT4022 PC Desktop

1 Answer

My Aspire M1600 (desktop) might have encountered an overvoltage surge and wont start at all. The lower blue LED on the frontpanel is flashing slowly (1 sec). Where to look /what to do? Looking forward. BR...


Test the power supply first- to do this you should use a "tester". OR un plug the power cable from motherboard 20/24 pin adapter and might as well unplug the rest of it for the testing purposes. With the 20 pin cable unpluged look for a GREEN wire on it then taking a paper clip TOUCH green wire to any SOLID BLACK wire. If the power supply powers up - fan comes on- its likely a Motherboard failure.

Note: you can (test power) on the power supply with everything plugged in by "shorting" the green wire to black wire for 5sec. if the pc AUTO turns back off after 5sec it is bad motherboard or "maby" CPU/actual processor.

If you can throw some other RAM into the motherboard and try to power on normally.

You might want to RESET the bios - look for a jumper on the motherboard with 3 pins and - while unplugged from wall power - move the jumper to the other 2 pins (should share the center pin from 1st position) leave there for 5sec then move back to origional pins it was on. Then re-connect power and turn on normally.

Aug 06, 2009 | Acer Aspire (AST180-US340B) PC Desktop

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