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Computer boots up and after a short period, the monitor loses connection. Fan stops on CPU but power light remains on green on chassis.

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Hi, My name is Alex and im here to help with your problem

It sounds to me like the power supply needs changing as enough power is not going around the whole motherboard. They are cheap to buy but if you're not sure how to install them, then please geta a trained computer technician to do it.

I hope this solves your problem. Any questions please feel free to ask me.

Posted on Oct 13, 2008

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Xps 7100 has power, green light in back is on, but cpu will not turn on, changed the power supply, still not powering up.


is the fan over the cpu running? if it fails to spin the pc will not boot. could be bad connection of wires, a short, also could be corrupted boot file or graphics card boot? are fans spinning/usually two. cpu not then find why?

Dec 03, 2013 | Dell Studio Computers & Internet

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The green LED light on the board is lighted. When I push on/off button the CPU fan moves for 1/2 a second .I tried a different power supply, but that did not work. I replaced the CPU fan, but that did not...


Hello here is the homepage:

http://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Desktop+Boards&ProductLine=Intel%C2%AE+3+Series+Chipset+Boards&ProductProduct=Intel%C2%AE+Desktop+Board+DG31PR

Any abnormal beeps at startup ???

http://www.computerhope.com/beep.htm

The problem could be a ram module failing, or the graphic card if installed on the mainboard.
Or a short circuit somewhere.

Look also here:

http://www.tomshardware.co.uk/forum/243625-13-turns-wont-boot

Try starting with only 1 stick of Ram, the monitor and the keyboard connected, no other USBs to be connected.

Look also for bad caps on the mainboard:


1_28_2013_2_50_28_pm.jpg

If they look like this, the mainboard is dead.
It does not pay, to let them be changed.

Good luck

Jan 28, 2013 | Intel DG31PR Motherboard

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Pc not booting


If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

Apr 22, 2012 | Intel Motherboard

1 Answer

The cooling fan for the interior of the cpu case froze up and now the computer will not boot up. I replaced the fan but the computer will still not boot. I can see the lights on the front of the unit come...


It's the power supply, the cd drive door will open in all cases if it has power - 12 volts to be more precise. Simple test: take the cd unit and the power supply out of the case of the pc, connect them  and start the PSU (connect the green wire to a black one) - if the door opens now it means that there's a big short on the motherboard, if not the PSU is fried.

Jul 04, 2010 | ASUS P5S800-VM Motherboard

1 Answer

AOC color monitor model 5En...during power on all led lights blinks then stops blinking without display action. all led lights on no more action observed.


actually if u repair an aoc monitor alone without getting connected to cpu once u switch on the monitor all led's will lit on ( green light ) it will remain on situation until u connect the vga connector to cpu that's the time led's will lit off and only the power led will remain in green condition.some aoc 5en once u power on power led is in green condition and if not connected to cpu it will be in orange condition.hope u get some idea but i am not sure if it will work with ur monitor. but as long as LEDs lit on i think no problem with ur monitor.

Nov 02, 2009 | AOC 5 En 15" CRT Monitor

1 Answer

PC SHUT down


three things i find to cause this,

one, the power supply is bad,
two, the power connector is lose or not push in
three, the heat sink on the processor has come off. This will cause the cpu to over heat and self shut off.

to test the power supply, pull the connector off the mother board and short the green wire to any black wire with a paper clip, this will switch on the power and see if it stays on.

if you need to replace it, you cannot use a regular atx power supply. E machines have a different pin out.

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Monitor will not turn on after booting computer


if you have onboard video try a video card that fits in PCI or AGP slot or try a different video card in place of the one you use
with everything else seeming to be correct this seems like the only thing you have not done

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1 Answer

Laptop wont power up.


LS-120 SuperDisk drive help Next, connect the power and boot the computer and install the software ... as the computer beeps or pressing and holding CTRL as the computer is booting up.

Good Luck, Read and folow instructions/Please dont for get to Vote/Thank You.

Dec 25, 2007 | Compaq Presario R3000 Notebook

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