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No power to computer tower, power supply problem? Can I switch?

No power to computer tower

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Sounds like possibly a failed power supply. If you take yours to a reliable local tech, they can load test it to be sure, and probably provide you with a new one for about $30.00.
Otherwise, please see this article to troubleshoot the problem.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Posted on Sep 12, 2009

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My mini tower computer still standby


usually if the pc doesn't wake up the usual culprits are power supply and motherboard. if both checks out it'll be your display card and memory.

if your familiar with your Desktops components but needs help checking them out try this videos

https://www.youtube.com/watch?v=6xLy8rZRjU8
https://www.youtube.com/watch?v=J8SyV2YWFik

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Dell optiplex mini tower wont turn on


Make sure the power is being supplied from a working source, then check if the switch on the bottom-back of the computer is switched on. If the power button still doesn't work, try holding the button down for 10 seconds. Next, try switching the switch off, unplugging the computer for at least 30 seconds, plugging it back in, switching the switch back on, and pressing the button.

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I getting loud annoying sounds from my CODEGEN ATX2 switching power supply I think its the fan should i replace the power supply and is it affordable to have it done?


Yes you should replace the power supply and you can do it yourself go to the back of the tower and at the top you will be able to see the power supply it is held in with 3 to 4 screws open the side panel and unplug all the wires that go from the power supply to the different components of the computer
then unscrew the power supply from the back of the tower and lift it out you will need to get a ATX
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Our Computer tower is not wanting to turn on. Is there any way something could have been hit on the back or a button pushed in moving it that would cause it to not turn on?


Hello.

some towers have a switch on back for the power supply power. If you have one, try to switch it back on. If you don't have one and the computer doesn't make any noise, it's likely a power supply issue.

Hope it helps.

Feb 08, 2011 | Computers & Internet

1 Answer

The tower nor keyboard wont come on and its pluged in


Advise, c

1) Check to make sure THE receptacle in the surge protector that the computer is plugged into, is good.
I have had a few surge protectors where just THAT receptacle was bad.

("Hmmm, monitor, router, and printer has power from the surge protector." Checked the receptacle in the surge protector that the computer was plugged into, with a table lamp, found THAT receptacle was bad)

2) Receptacle in surge protector proves to be good?
Suggest performing the test to see if the problem is the Power On switch, or the Power Supply.
(The Power On switch is located inside the plastic Power On button)

The test involves bypassing the Power On switch, by using a jumper wire on the Soft Power On, in the ATX main power cable's connector.
Has nothing to physically do with the switch itself.

Using the jumper wire the computer (Power Supply) comes on?
Problem is the Power On switch.

[ Example of a generic ATX power on switch that I have found fits many computers,

http://www.directron.com/atxswitch.html ]

Using the jumper wire the computer (Power Supply actually), does Not come on?
The problem is the Power Supply.
Replace.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

(Green wire {PS_ON} is the Soft Power On wire. It is jumped to ANY Ground {Black} wire)

Want to know how to Properly perform the above test? Please post back in a Comment.
Also post the computer manufacturer's name, and the Model Number.
(On the back of a desktop computer next to the Windows Product Key, or up on the side of the tower)

Regards,
joecoolvette.

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1 Answer

No power to tower. Pressing power on button on front of tower fails. Is there some kind of reset or fuse to look for?


There is no easy fuse. Did the computer get turned off at the back? Some power supplies have a switch on the top of the tower. Did the power strip get turned off? Have you verified that the outlet has power?
If this is not the problem, it sounds like a blown power supply. Do you have any lights on the system? If not, take the tower to a local computer shop and they can very quickly diagnose a failed power supply.

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I have a dell optiplex sx280 computer and monitor that has lapsed into ''power save mode'' and I have been unable to ''awaken'' it (I'm not sure which is ''asleep'': the monitor or computer!) from sleep. I...


How's the status light of your computer monitor? is it blinking amber? and the status light of your computer tower's power button? blinking amber as well or solid green or no light at all?

1. Disconnect all the connection at the back of your computer tower
2. Press the power button of the computer tower for 15 seconds
3. Reconnect the power button and the monitor cable at the back of your computer tower and turn on the computer (if it turned on that means that one of the device plugged at the back of your computer tower is faulty)
4. If still the same problem, open up your computer tower.
5. Reseat the video card, Reseat Hard drive, Reseat Memory, Reseat CPU, Reseat power cord coming from the CPU to your computer (doing all things one-by-one to pin-point the root cause of the issue)

If none of the troubleshooting steps fixed the problem, possible that the power supply is faulty and if the power supply is faulty sometimes it goes with the motherboard.

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3 Answers

What is Mini Tower ATX Cabinet


A mini tower is a PC desktop case which is approx half the height of a full size desktop tower case. ATX probably refers to a ATX switch mode power supply.

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2 Answers

Dell tower desktop Dimension 5100. Tower makes whistling sound.


sounds like it could be a bearing in your hard drive. is this problem constant? If so, I would open up the tower and disconnect the hard drive and then power up the tower again. if the sound goes away--you need to get a new hard drive. If not, you could have some dust bunnies in your cooling fan.

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1 Answer

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Check the switch which is putted on the outside of your SMPS. Check the switch/ I think the power connector is loose. Check it.

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