I have a dell. It's giving me Diagnostic code "D" and it seems like the fan is too fast, but maybe it's my imagination. (it probably is). On the screen it displays the name of the type of BIOS but does not do anything else. All Dell says for 'd' is other error.
In the beginning, it was working, then I took out my sound and graphics/video card so that I could get the model # off of them. then, when i was done, i put them back in and tried to turn it on and this happened
More aboutfast diagnostic code
Never Mind. I got it working. I'm not sure what happened, but it's working. Thanks to anyone who was working on a solution.