[SOLVED] Need error light code reference (or manual) for Dell Optiplex GX260

I've found lots of great posts on here that reference the error light codes for a Dell Optiplex GX260

(Manuals*and Documents for OptiPlex GX260 | Dell US)

Unfortunately, the documentation for this model no longer exists at the Dell web site.

Does anyone still have this document, or a reference for the error codes the 4 lights on the back of the tower generate?

What I get is:
A- Amber
B- Amber
C- Green
D- Green

No video, No POST beeps, the hard drive and fans spin up briefly then go back off (the cycle repeats once). Front panel power light is green then amber.

Thank you...