Question about Dell PowerEdge 1600SC Server

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No Video Signal on 1600sc

My Dell 1600sc suddenly stopped sending a video signal. Upon reboot, everything appears to power up, yet I am still not receiving a video signal to troubleshoot problems. I added a PCI video card with no change. The 1600sc is network attached, yet I can not map a drive to the 1600sc from another computer, so I suspect it is not booting all the way up. I am not getting any system beep codes either. I verified that the monitor, keyboard and mouse were all okay using another computer. Upon inspection inside, all cables and connections are tight. The only thing that looks out of place is a blinking green led in the lower right side of the motherboard when powered up, and it stays blinking until it is powered down. The tiny number next to this led is U23.

Many thanks for any help.


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  • Brian_L Jan 08, 2008

    I tried this with no change. I even tried changing the power supply with no affect. I reseated all of the cables, the Memory card and the CPU likewise with no change. I still think the blinking green led on the motherboard is trying to tell me something, but have no way of telling what it means. The system does appear to go through some sort of boot cycle and then completes with two quick beeps and then the green led I know that when I opened the server that there was quite a bit of dust that I cleaned out, but haven't dusted the back side of the motherboard. Does anyone have any opinion if dust could cause this problem? That's my next thought other than going the expensive route and start changing out the CPU.

  • Brian_L Jan 10, 2008

    Himm --- clear the CMOS settings. I'm not sure how do do that. It's been a while since I have updated BIOS. I'm not by the server right now, but I seem to recal Dell shipping a CD with the BIOS on it. Can you tell me the steps I need to perform to reset this --- would sure be simplier with a monitor, as I can't check boot sequence, or anything?

    Thanks for your help !!!!!

  • Daone May 01, 2008

    Well I have a similar problem, however on my server It's a brand new mother board and processor. Nothing comes up on my monitor either. All the cables are plugged In real good and everything does power up, but nothing on my monitor. Also when it does power up there is no beeps at all, even if I disconnect all the drives there is no beeps. What else could it be.



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I also have this problem with my Dell Poweredge 1650, integrated Ati Rage XL doesn't work. But when I add PCI graphic card, I get the video from it. Could integrated video be somehow disabled?

Posted on Apr 02, 2011


I have at this same problem. Its not the Bios, CPU, RAM or power supply. Its the mother board itself. I ordered a new mother board off of and my server works fine!

Posted on Jul 20, 2008


It seems that you cannot upgrade the video card on certain Poweredge Servers. Not sure how that is possible, but Dell probably did it becuase now these servers could be used for power user workstations - and repurposing doesn't give dell any more money.

Posted on Jun 17, 2008

Hi I have similar problem with my poweredge 1600sc.
When I power it up the video image doesn't come on until I press the reset buttom once and everything start working as normal.
No Idea what the problem could be.

Posted on May 03, 2008

The beeping sound might be the the caused of wrong memory module, fan not plug in right, power supply wires not connected properly. i work in a company where i have to maintained 67 Dell 1600sc servers.

Posted on Apr 13, 2008

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Disconnect from the network and all other accessories, and power up the system, this might be due to a faulty device attached to the system, eg: when you connect a usb faulty device the boot takes very long time, sometime it does not boot up.

Posted on Jan 03, 2008

  • M Karthikeyan
    M Karthikeyan Jan 09, 2008

    Dust i not a problem, once you switch on the power,

    the system, the processor and rams are checked, the beep tells us that the ram is ok, then the bios posting takes place, once the bios posting is done the control goes to your hard disk from where the os takes control and so on.

    analysing your problem, you are having problem with the bios posting, because after the beep the system does nothing,

    do you see any display on the monitor, if you dont see anything, then you are having problem with the bios, hence clear the cmos settings.


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