OK, the BanHammer is stumped.
I'm working on my mother-in-law's computer. It's an eMachine T2885. It had a 2.6 Celly, 512MB RAM, an 80 gig drive, 250W PSU, onboard graphics, and is running XP Home. The rig is about 3 years old.
She and my wife were online with it the other day. My wife said the screen just went black, and a funny flopping/scrubbing noise started coming from the computer. It wouldn't power down, so she had to kill the power. When I reconnected the power all I got was the same sound, no boot, and the front switch had no effect.
I pull the hard drive and checked it out in my wife's computer... works fine. I went ahead and ordered a new mobo, installed it, nothing. I pulled the PSU and had it tested, and it is fine.
Turns out the funky sound is the floppy drive. it starts spinng when the power is reconnected with the old motherboard, not sure about the new one.
I know that it is possible that her mobo died and I got a DOA one, but the odds are against it.
It was suggested that the modem could have went out, and that it could cause it. I have pulled the modem, still nothing.
I have tried to boot without the RAM, and still get nothing, not even beeps (but I'm unsure if the mobo has a speaker... I think the old one does. Here's the new one:
I need some ideas here.