Thanks for the replies everyone, I think the first, simplest answer is probably the winner.
PD2JK wrote on 2024-05-08, 20:45:How is the die of that CPU doing, any scuffs or pieces broken off the corners?
I got so focussed on the pins and getting it nicely seated in the socket I didn't look too closely at the die...the results are fairly clear.
IMG_3584.jpg
This CPU has clearly had a rough life and probably my culprit.
elszgensa wrote on 2024-05-09, 01:15:What, no RAM at all? Add some.
zuldan wrote on 2024-05-08, 21:55:My 1400 would not post unless there was a hard drive plugged into the motherboard. Never seen that before.
I'm pretty used to beep codes or even a full on display followed by a memory error message, so I try to cut out as many components as possible while testing. It didn't occur to me that some boards might require more components to even attempt to POST, learn something every day.
elszgensa wrote on 2024-05-09, 01:15:"Fans", plural? Does your PSU have multiple, or did you lie earlier? What fans, exactly, are connected where and turning on?
Which of your components do you know to be good? The PSU you could try with another board, or measure. Memory, again use another board. I'd also get a cheap second CPU to swap in for the current, problematic sounding one, just for testing. If you could test the current CPU in a different board that'd be excellent too. Right now there's just too many unknowns for my taste.
Easy Sherlock, option 1 it was a typo and I meant "Fan" OR, as is the case i really meant "Fans" there is a PSU, CPU, Case and GPU fan, all were running - I don't know if English is your first language but jumping straight to accusations of lying is a bit of an extreme reaction.
I've tested everything except the Mobo / CPU in this combination as its currently the only Socket A board/ CPU that I have, but based on the shape of the die i've ordered a much better example of a 1GHz Athlon from ebay now (not the same seller...the 1400 was delivered in a jiffy bag and is fairly clearly busted).