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Problem booting up

When I turn my computer on it won't boot up correctly. the powere light is supposed to be green but it is orange. there are no beeps to let me know there are any problems with the post.I looked at a website for IBM BIOS and it says no beep (no power, loose card, or short). the cards are not loose and it seems to have power but the short is a problem I don't know how to check that.

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  • three6zero Mar 27, 2008

    the motherboard light is orange not green..what is that ..i have 8100 dimension dell..

  • Anonymous May 02, 2008

    bios problem message is The System interduce chassis opened or tempered before please check the system

  • dlaminivel Jul 16, 2008

    I have a mecer computer with a asus motherboard P5VDC-TVM/S. The computer does turn on but then switch off before completing the boot sequence I have tried to change the power supply and removing the power from the harddrive. I took out the RAM and erase it but no help.

  • david500 Nov 11, 2008

    I have a dell Optiplex Desktop GX280 with a very very loud cpu fan.

    When I turn on it gives amber light but no boot, just the fan starts going mad. I have
    onboard graphics card. I have


    • Disconnected all drives and left only motherboard connected,
    • Reset bios – no luck


    The only thing is when I take the cpu out and leave cpu fan connected then the fan works fine (no loud noise) so I think it is not the fan – but the cpu or a the motherboard / mother board sensor.

    I would really appreciate some help as I don’t have a clue what it could be. I don’t get any beeps from the motherboard at all on boot-up with cpu or without. Motherboard power light goes on inside case.

  • fikruhlu Nov 24, 2008

    when i try to turn on the computer the fan is very noisy and no booting motherboard light is not green but orange

  • Wildwayne Dec 13, 2008

    I have a Dell XPS 730, has not worked at all since I got it (took it out of the nice big box it came in - hooked it up to my monitor, attached peripherals, powered up and it sounded like it was about to take off; nothing displayed on the monitor though and the keyboard/mouse did not even light up) - all LED's on the mobo are on (including CPU hot LED) plus the LED Code FF was displayed. Removed RAM then powered up - no POST beeps. Removed Hard Drive Cable no beeps. Removed graphics card - no beeps. Tried CMOS reset no luck - checked all connections all was good and properly seated. CPU Fan is extremely noisy - I think I got a bum machine here and it has to go back... Guess I should have just build my own PC instead of ordering through Dell...

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This is a well-documented issue on GX280 Optiplex machines for which there is no permanent fix - at least there is not one I came up with or found elsewhere. The symptom is that after power on, the CPU fan spins faster and faster until it tops out at rather impressive RPMs. Swapping power supplies, memory sticks, CPU, the heatsink and fan assembly, or adding more heatsink grease does not make any difference. There are no beeps, no video, nothing. The problem is related to a CPU temperature sensor, and some machines may display a message on the screen stating so.
Through various trial and errors I was able to make almost any motherboard with this symptom boot up. A rather significant downward pressure applied on the top of the fan vent will make a system boot up and run for days, but the pressure has to remain in place or the system will freeze instantly. This pressure has to be applied not on the top of the entire fan assembly but just on the vent side, in a way that the heatsink will not make good contact with the CPU on the side opposite of vent. What I do is I place a 1/2" tall object at the top of the fan casing right at the tip of the vent and force the case closed. The PC will boot and work as long as the case is closed and the pressure is there.
I have no idea what the pressure on top of the heat sink vent really does. I suspected that maybe the CPU contact pins become elastic and deform over time. I tried carefully and tediously bending all of those pins up a bit to create a better contact point, but that did not work. I also removed and measured capacitors near the voltage regulators for capacitance, and all typically measure near their advertised values. I haven't seen a motherboard with popped caps and this racing fan issue concurrently, but this doesn't mean the symptoms are mutually exclusive; it's probably just a coincidence.
I'll keep looking and trying to find a fix for this issue. We have a small pile of motherboards with this identical issue at my workplace, and when/if I find a solution I'll be sure to write about it.
Good luck!

Posted on Nov 25, 2008

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Try this, open up your computer casing and remove your RAM stick and the power connector of the harddisk. Now turn on your computer. Do you hear any beep sound? If yes, turn off your computer, put it back but before it use a pencil eraser and rub the contact point of the RAM. Turn it back on and see if you computer can boot up.
If still not success, remove the graphic card (if your computer have a graphic card). Turn on the computer, you should hear a long beep sound. Again as step above using the eraser and rub the contact point of the graphic card. Place it back and turn on your computer.
If the step above can boot up your computer, turn it off and then connect back the power to the harddisk.
If still not successful, try to change the RAM or the graphic card.

Posted on Feb 07, 2008

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