Ughhhh. OK. I left it unplugged for a few minutes, plugged it in with both RAM sticks, and it let me into BIOS, I set it to defaults, saved, and... it shut back down and acts like it did before. Grrrrrrrr......
EDIT: OK, get this, I love my old 80's clicky keyboard, so I used it with an ATX adapter on this sytem...
...take that out of the equation, and it works, at least so far, even with both stick of RAM.
Again, WTF?
Nevermind, it was booting into Windows but it's off again.
EDIT: Um... so I tried again after having removed the RAM that won't display on it's own and leaving the other. I told it to reset VRAM in BIOS, and told it not to warn me when the Chasis is open.
Now it boots fine, but says it can't find the TPM device, and haults saying that the Chasis is open, even though it is not and though I told it not to warn me.
EDIT; Reset bios, still have 2nd ram stick out. I set Open Chasis warning to clear (as per the web) and now... I'm trying to get it to stop shutting off after the Bios screen. Success fo far, it begins to boot Windows, but always shuts itself off in the end.
Again, there were no hardware problems when I began, it worked fine at the customer's house, virus and adware infection aside.