Question about System Power Supplies

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Bestec ATX-250-12E problems

My power supply's fan doesn't run. It starts, makes a wierd clicking sound, and stops. Is this why it shuts off during games and other things? Can you tell me (in detail since I'm no computer genius) what to do???

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  • Anonymous Oct 28, 2008

    i WANT TO BE ABLE TO TEST MY POWER SUPPLY WITH OUT HAVING IT CONNECTED TO THE MOTHERBOARD. pLEASE SEND ME INFOMATION ON HOW TO TEST AND SEE THE OUTPUTS PLUS KNOW THAT THE FAN IS WORKING.



    DON WILSON

    501 MARTHA

    EULESS, TEXAS 76040

    e-MAIL don-wil@tx.rr.com

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Hi the power supply fan is jammed because of some object stuck - this could be some broken plastic component of the fan or the protection grill could be jamming it . Do not switch your comp before checking this out because inadequate or no air cooling can damage your computer .In Power off condition with a small screw driver try rotating the fan manually or by blowing air into the fan , it should spin smoothly else your power supply to be replaced .

Posted on May 24, 2008

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Power light on computer flashes..tried the trouble shooting advice w no results. Bestec power supply model atx 250-12z. Unplugged computer to clean and now wont turn on..No fan no nothing..Just a green...


If you didn't accidentally unplug the four pin connector near the CPU, you need to replace the power supply. This is actually a fairly common occurrence with the cheap ATX power supplies being tossed into systems these days.

Jun 15, 2011 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

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When compter is turned on the only thing that runs is the fan. The monitor does not display anything. Can you please tell me what you think happend. Husband took out the power bestec atx-300-12e. and...


power supplies are common failures..a 300Watt ATX power supply is not very expensive these days so it would be an inexpensive way to see if this is the problem..the brown spot concerns me though..seems maybe you have a filter in the supply that may have leaked electrolyte...if you have another computer with the same type of supply in it..you can try it..as long as the plugs are the same and the wattage is the same or higher

Jan 08, 2011 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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Computer has bestec atx-300-12e power supply. it


Actually no, the power does continually comes in but, when stopped, the PS is in a state that could be assimilated to stand-by - only a small side circuit is continually operational.

Jun 23, 2010 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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I have a burned out Bestec ATX-250-12z power supply for a hp pavilion a320n. I need to know if a Dynex® - 400-Watt ATX CPU Power Supply, will work in its place.


yes it should do provided your current psu is not a small mATX one. ATX power supplies are pretty generic. Make sure you get one that has enough connectors to suit your system, having said that, Considering it's an off the shelf PC I would guess most PSU's would have the right number and type of connections.

Jan 10, 2010 | HP Bestec ATX-250-12ZD 250w HP Pavillion...

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I think the power supply is bad. the light on the front of tower is yellow and makes no sound when the computer is turned on. all three fans run.


No i don't think the power supply gone bad, as your decription says light on the front side is yellow and all the fans are running. This may due to RAM has been not been inserted properly or other hardware problems. Check all the connections of the hardware will resolve your problem.

Revert back for more assistance.

Dec 26, 2009 | E-Machines Bestec ATX-300-12E Rev. D 300w...

1 Answer

Kept trying to start windows then would shut off. will not do anything now. no power after cord


gordonmic403

your very brief statement about your computer sounds like a power supply problem. I would suggest testing and / or replacing your power supply first to see if this is the cause.

Nov 26, 2009 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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EMachine T6420 will only turn on to start the fans and then immediately turns back off - has Bestec ATX-300-12E power supply - do you think that's the problem


These computers have had problems with the mother board. I had one the same problem, and I did research on the INternet. Best advice.... find a replacement board which will fit this box. Then you will have to re-install the operating system with the cdrom. You may be able to repair the system.
More than likely the power supply is not the problem, but the board is suspect more than anything.

Sep 23, 2009 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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W2888 emachine just shut down as if it were unpluged


THE LITTLE LIGHT ON THE MOTHERBOARD SHOULD ALWAY BE ON. THE FAN ON THE POWER SUPPLY RUNNING NORMAL OR FAST.
DID YOU ADD ANY NEW DEVICES TO YOUR COMPUTER LIKE UPGRADING THE RAM, VIDEO CARD, NEW INPUT DEVICE.

NEED MORE INFORMATION.

ROD

May 12, 2009 | Bestec (ATX-250-12E) 250-Watt Power Supply

2 Answers

Powers on and turns off 10 - 20 seconds ?????


Check the power supply first, unplup the cd dcd components and try your pc this way,
Check the cpu fan also as this sounds as if the cpu is reaching critical heat ranga and is shutting down the system to protect it self

Dec 19, 2008 | Bestec (ATX-250-12E) 250-Watt Power Supply

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