A dark problem with a simple solution

Working in IT I have come across a number of strange STOP errors in Windows that can only be fixed by doing something ridiculously obscure! Recently I came across another STOP error that is very obscure but fairly easy to fix! Well, for me it was easy to fix anyway.

This is the error message that appears on the blue screen when I work on the problem computer:

To solve this problem, I tried everything before contacting Dell customer service. For example, I replaced the memory, replaced the video card, replaced the motherboard, ran all kinds of hardware and memory diagnostic tools, and so on and so forth. Unfortunately, nothing helped!