Question about EliteGroup P4M800PRO-M Motherboard

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GREEN LED WILL NOT LIGHT

LATELY THE LEDS REFUSED TO COME ON AND NO POWER TO START UNIT, THENI NOTICED A SMELL OF BURNING COMING FROM THE PSU. TURNED OFF ALL POWER AND REPLACED THE PSU WITH A NEW ONE,NOW RED LED LIGHTS UP AND UNIT STARTS BUT NO POWER GOING TO KEYBOARD MONITOR ETC,GREEN LED NOT COMING ON?

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The ps2 connectors are shorted so the mobo out highly recommend replacing mobo

Posted on Nov 27, 2007

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Why is the disk drive green light off an on no power up of computer?


If you're talking about the light blinking on the CD/DVD drive when you try to turn on your system .. that's because it's getting enough power for the disc drive to run it's onboard boot circuits. Does not mean that the rest of the system is getting the power it needs .. could very well be that your main Power Supply Unit (psu) is going out.
Note :: PSU's are one of the most frequently replaced items in desktop systems. Many new systems come under-powered and upgrades that place more demand on the power supply will stress minimal psu units.
When I replace them, if at all possible, I put in stronger ones so they do not stress and wear out as quickly.

If you're talking about the actual Power LED on the computer blinking, its most likely an error. The 8200 has a set of LEDs on the back to indicate various failure codes. You didn't mention beeping so its not a beep code, which exists as well. If any light other than the CD/DVD disc light is what you were talking about, please clarify or visit [Link shown below] :: the Dimension 8200 pdf manual link, codes in it.
QwkLink1

May 10, 2014 | Dell Dimension 8200 PC Desktop

1 Answer

Have dell Inspiron 546 minitower. Been acting up lately where it won't power up. The LED light on PSU below voltage switch is green. Light on MB is orange. No power or indication at all on front...


PSU's put out several different voltages if the 12Vs isn't working it won't power the motherboard. Some outputs may still be functioning therefore you may see some lights on and even some fans running. Replace the PSU.

Jun 29, 2013 | Computers & Internet

1 Answer

Flashing green led light in back of tower


hi, okay you got to be careful here, it's sounds like the power supply has called it a day, disconnect from the mains take the side panel off and get sniffling can you smell a burn smell , no , now pull the power leads from the hard disk and DVD drive if fitted now removing anything that could cause a short on the board , turn it on, do you get video display ?


Please be careful of static shock and mains shock so only look inside once it disconnected from the mains.
Keep me updated please.


Regards

Dec 21, 2012 | Computers & Internet

1 Answer

The green light is blinking on the supply unit but it not coming on or booting up , i need to know if the supply unit is bad


Close examination of your power supply may reveal if the psu is bad.

When the power supply is plug in ac socket the green indicator led inside the motherboard will lit steady green. See if by turning on the cpu you will see some sparks in the power supply connector attached to the motherboard. This is a clear indication of a bad or shorted psu.

You can also smell if there is a burning inside the psu.

See if the fan inside the psu is working if not then its a clear indication of a bad psu.

Using a multimeter if you have one measure the dc voltage coming from the supply connector. Insert the black probe to one of the black wires in the connector. And the red probe to the red wire in the connector. the reading should be +12VDC. Put the red probe to the red wire and it should read +5VDC. Any readings below this, means bad psu.

Measure also the output voltage when there is a load in the power supply. Connect a CD-ROM drive or hardisk and measure again the voltage. Dropping of voltage when put some loads is a clear indication of a bad power supply unit (psu).

I hope this will help you.
Thank you for using Fixya!

Jan 11, 2011 | HP ATX-300-12Z (ATX30012ZBD) 300-Watt...

1 Answer

Power LED is On but system doesnot start ?


hello, I have a solution for u i think it may help for u.
your problem is:

When u press the start button... the power LED comes on but there is no POST beep or BIOS screen or boot up. The SMPS fan and Processor fans also dont come on at all. there is a small LED next to the SMPS plug on the motherboard that does light up when the system is connected to a power source.
Part of the system configuration is the kind of PSU you have in your system.
SOLUTION IS
So, what kind of PSU?

Try to borrow a known good PSU. Or better yet, see if you can test your PSU in another working system. If you cannot do that, try to borrow a DMM to measure the voltages. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead.

Jul 01, 2010 | ASUS P4P800 SE (890552603657) Motherboard

1 Answer

PC will not power up


Check that the ram memory hasn't come unseated from the mobo. If you are using an above board video card also check that it is properly seated as well.

The clicking noise from the PSU is kinda perplexing though...

Mar 01, 2009 | HP Compaq Presario SR1350NX (PP196AA#ABA)...

1 Answer

A7V8X NOTHING HAPPENING,


When a power supply goes out the way yours did, it's going to fry the MB 99% of the time. So you're going to need a new MB. It's possible that you CPU is ok, but that could also go too. I would replace the MB first, then the CPU if that doesn't work.

Nov 07, 2007 | ASUS A7V8X Motherboard

1 Answer

Toasted?


i would check the connector from the psu to the motherboard where it plugs in and check that there isnt any plastic melted socket on the terminals as it may be shorting on the motherboard and the fan is drawing the fumes out making look as if its the power supply

Jun 04, 2007 | Gigabyte GA-8I915P Duo Pro Motherboard

2 Answers

Motherboard or CPU dead?


The burning smell (if it was a fishy type smell) may have come from the mobo psu 21 pin connector where you plug in the psu. The connection may not work properly because of melted plastic deposits which may be why you are unable to turn it off at the switch. Just check the old psu connector for signs of rusting pins and mis-shaped connector. If you have a fairly recent mobo and processor ensure that the power supply doesnt need the power supply from the psu, unlike some processors where the power is taken from the ZIF mobo socket.

Jan 18, 2007 | EliteGroup KT400 (L7VTA2 V2.0) Motherboard

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