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Dispatch, we have two dead crunchers at Fardringle's place!

Hmmm, very interesting.
As an amateur I'll give my thinking a spin ... 😉 I am sure some people will laugh at my efforts of troubleshooting, but what the heck, I hope they enjoy it:

First, the the very obvious: is there any juice in the wall outlet? (fuse...)
Then:
Is the tiny speaker emitting sounds?, or is it broken?
Are any fans (HSF, PSU, case fans) spinning?
Any LEDs on the mobo? Do they light up?

I assume that the periferals are working OK because they could not affect the comp in such a way that it would not start at all.
Therefore it could only be the PSU, motherboard, CPU or some switches (Power, reset, temperature protection):
Have you checked that the tiny speaker works OK? because ... without RAM, the computer would beep. With a broken GPU the computer would beep. If all is silent, then the speaker may be broken too - that has happened to me and it took a hell of a time to find that problem...
OTOH: if the CPU only was broken then the PSU would start - are any fans spinning? So the problem is narrowed down to PSU or motherboard or one of the above namned switches.

If the nothing really happens (i.e. no speaker sounds, no fans spinning) the it should be the PSU. Isn't there a fuse inside the PSU?

Just my 2 cents - you probably thought of all these possibilities ... 😉

 
I wouldn't laugh at any suggestions (although I might chuckle at the ones I really want to follow, like throwing the computers in a river or running them over with a truck). 🙂

The outlet does have power. Plugging other things into the outlet (lamp, printer, laptop) works normally.

The motherboard speaker doesn't make any sounds at all.

None of the case or power supply fans spin at any time.

I suspected a problem with the power supply as well, but I tried a known good PSU and it wouldn't boot the computer either. PC2 (which was working) stopped working after I tried its CPU in PC1, which is why I suspect that the power supply in PC1 killed the motherboard which in turn killed both CPUs.
 
Yeah, that sound reasonable - changing one motherboard, one PSU and 2 CPUs sounds like two new computers to me - if one calculates the work involved. OTOH: "upgrading" Vista to XP also takes time ...
 
Fortunately, Dell started offering XP Pro as an option again (with a free upgrade to Vista Business) on their machines some time in the last few days, so I don't have to worry about wiping Vista and installing XP on the new computers. That will save a bit of time and money. 🙂
 
That other thread's a long one, I don't have time to read it right now but if you're still stuck LMK & I'll read through & see if I can help.
 
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