Question about Gateway Emachine Bestec ATX-250-12E PS 250w Replacement Power Supply Part Number P/N 100744 (PSATX25012E) Power Supply

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E-machine wont power up

I have a t2885 e-machine and it power up. I think the problem may be the power supply. Could their be something else that would cause this proble. Also in what order should the power led, and other connectors be in on this machine?

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  • moshesergant May 21, 2009

    E-machine 2885 will not power up. The main switch is not functioning, and the fans at the power supply (ATX-250-12E) or the CPU are not on.
    I have disconnected all connectors to hard drive, CD-R/W and DVD players, but to no avail. The green LED on the mother board is lit on.



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Your power supply is fried. I had the same problem with my Bestec ATX 250 power supply. I fixed the problem by installing the StatTech model: ATXPOWER250. It was easy to install and works well. It is almost identical to the original but more quiet. I got it for $29 at Also at online,,, June 20,2009

Posted on Jun 20, 2009

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Shut down the system, disconnect every thing you

can possibly disconnect.

Press and hold the power button for 15 seconds.

Reconnect A/C power and try to boot up.

If no change, open case, disconnect all cables to the CD/DVD and hard drives. Reconnect power

and try to turn on again.

If still no go, remove all expansion cards (modem, NIC, video, etc.

Remove and reseat the RAM. If you get no power, remove the RAM and reconnect power to see if you get beeps from the system.

Let me know if you need to go further than this.


Posted on Feb 11, 2009


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first unscrew the cover of the computer, then
i suggest you take out all the connectors, so that you can dettach the power supply easily.remove the screws at the back of the power supply, which is in the back panel of the cpu chassis.
unplug the 24 or 20 pin connector from the cpu and all the power cords that supply the peripherals, take out the power supply and replace with a new one.
Plug the screws, plug the 20 or 24 pin power connector into your motherboard, and supply devices like your hard disk, cd rom by plugging in the power cords.
note, if your computer has a 4pin connector, make sure that you plug it in.

Heres a video tutorial on the step by step process.

hope this will help you out.
Thank you: )

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