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No power when turning on computer key board and mouse light up for a second and then turn off but fan still working.

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DONT KNOW

Posted on Jul 20, 2009

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Posted on Jan 02, 2017

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2 Answers

Motherboard Power Problem


Hello Alienware,

Could be a few things.... such as the micro-fuses that have gone on the MB....

But what I dont understand is this:...."Then I disconnect the 4-pin cable that goes from the Power Supply to the motherboard near the CPU and the pc turns on fine"

How????
You have just disconnected the cable from the PSU to the motherboard....it CANT turn on! LOL.

Do you mean that the lights turn on?
Or you hear the HD spin up (if you left it connected to the MB that is)?

Please advise so I can help you more.

Nov 11, 2013 | Biostar P4M80-M4 Motherboard

2 Answers

I have a HP Pavilion Slimline, when I turn it on it seems like everything is running fine since I hear the fans and the light turns blue. But my monitor keeps telling me to check my video cable, then goes...


It could possibly be a power supply failure. Make sure all connections are in place.
The only other solution I see to this is a bad motherboard.
Good luck and do not forget to rate me :)

Jan 15, 2011 | HP Pavilion Slimline S3123W Desktop PC -...

1 Answer

My emachine T1742 desktop will not turn on. When plugged in the power supply's fan turns on, cpu fan doesnt start, both hdd/power led's flicker and pressing power button doesnt power on/off system.


Disconnect all the devices from the computer(tower) including keyboard, mouse, monitor(everything)..even the power cable

Now keep on holding down the power button on the computer tower for 15-30 seconds..

Now release the power button, plug in the power cable, monitor, keyboard, mouse and turn on the computer...

If it works, great!!!

Otherwise, take it for repair..

Dec 03, 2009 | E-Machines eMachines Desktop PC

2 Answers

Power light goes out but power remains thru the m-board fan runs


you need to replace the power supply. The fan sound is the fan for the power supply and not the computer. for cheap parts or used goto headgap's. They know what you need and probably even help you replace it yourself.

Jul 03, 2009 | Computers & Internet

1 Answer

Keyboard, mouse, screen do not function?


you may have a bad mother board or power supply,however try a few of these,bare bone the system,no mouse keyboard,only monitor,remove all internal cards,power on.If no go remove memory ,power on if you get beep tones the motherboard is good.Question for you did the fan turn during these steps.Do you have a amber light on the power button,if you do the answer is you have a bad power supply.
Good luck

May 16, 2009 | Dell PowerEdge 1600...

1 Answer

Wireless mouse/ keyboard will not work when 2nd computer is on


There must be interference on the signal from the mouse by the second PC

Make sure that there are no power cables close to the mouse or receiver, I have seen this cause problems many times.

You could also try changing the channel in the router settings in case this is causing the problem, it may be on the same channel as the mouse but only interferring when the second PC is turned on, ta, HPC

Nov 16, 2008 | Logitech V250 (9675380403) Mouse

1 Answer

PLEASE HELP ME!!!!!!!!!


Test your power supply for correct voltages. If they are all OK, then your motherboard is toast.

May 13, 2017 | E-Machines eMachines Refurbished EMA...

1 Answer

Raidmax 500w power slowly died, then wont turn back on.


1.-Your CPU fan is working?

2.-Your Power supply fan is working?

If not and following your description I think that you have to replace your power supply.

If you have the light on in the motherboard doesn't mean that your power supply is good.

Check the first to points above and if 1 and 2 are not working

Replace your power supply.

Let me know how it is going!

Thank you for using FIXYA!
Don't forget to rate my help
Pablo :-)

Oct 13, 2008 | RaidMax (ATX-612WBP) ATX Mid-Tower Case

1 Answer

Logitech S510 mouse will not turn on


I am assuming since you need batteries that the mouse is cordless. If so you normaly have to sync the mouse with the receiver.If the keyborad and mouse came as a package it will only have one receiver.There should be corresponding sync buttons for these devices.

Oct 07, 2008 | Logitech S 510 (967555) (DH967555)...

3 Answers

IBM NetVista Doesn't Start up


"the computer does not turn off"

So something started up? Fan? Hard drive?

Jul 10, 2008 | IBM NetVista PC Desktop

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