Dell Dimension 8100 keyboard/monitor problem

Dell Dimension® 8100 series,pentium® 4...
August 29, 2009 at 13:59:20
Specs: Windows XP
I have a Dimension 8100 that I hooked up to a 1907FP monitor. The light for the keyboard connection on the back panel of the cpu is amber and neither the mouse nor the keyboard will work. The monitor front panel light comes on green then changes to amber. The keyboard and mouse came from my XPS 410 and the monitor was used with my son's Dimension 4600. Does the 8100 not support the digital monitor and newer keyboard? I also have the Dim. 4600 my tech support friend cleaned and restored to default condition that I was going to use as memory storage for my XPS 410. I want to donate one of the Dimensions with keyboard, speakers and monitor. Should I use the 8100 for extra memory storage and donate the 4600 with the monitor? Thanks for any info.

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August 29, 2009 at 20:22:20
Dimension 8100 Manuals:

Controls and lights:

Diagnostic code lights:

Which lights are green or yellow - A, B, C, D.

Did you by any chance change the ram that was in it since it last worked properly??

"The monitor front panel light comes on green then changes to amber."

There's probably nothing wrong with the monitor. If it plugs directly into the monitor port it should work if the computer works properly.
That probably indicates the monitor is getting no video signal. It probably will do the same thing when it is not connected to the computer, when you switch it off, switch it on.

The keyboard should work too if the computer works normally, although if it's USB connected the USB controllers must be enabled in the mboard's bios Setup (they are by default). .

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September 2, 2009 at 12:56:00
Thanks for the info. The A and B lights are yellow, C and D are green. The monitor power button glows green at startup but changes to yellow (like mine does that is connected to the XPS when in standby mode). The Dell support ref. sheet says that the memory modules need to be reseated.

I'm going to try using the Dim. 4600 to see if that will work.

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September 2, 2009 at 14:46:16
A common thing that can happen with ram, even ram that worked fine previously, is the ram has, or has developed, a poor connection in it's slot(s).
This usually happens a long time after the ram was installed, but it can happen with new ram, or after moving the computer case from one place to another, and I've had even new modules that needed to have their contacts cleaned.

See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:

"Did you by any chance change the ram that was in it since it last worked properly??"

The reason I asked that is not all ram you can install is compatible with using it in the mboard.
If you have not changed any of the ram and the system worked fine with the same ram previously, then doing the above should cure your problem.

If you're not sure whether the same ram worked before, and if the above does not help, then there are more things I need to inform you of.

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