I might have missed something really basic here. I can't think of what I've done wrong, but it might be really, really stupid. If it is, please don't laugh... I've been building computers for a long time and this has never happened.
Basically I just put everything together in my basement. I have an Opus 150w for the car, but I was using a different (normal AC->DC) ATX PSU for building purposes.
Here are the specs:
> Athlon Mobile 2500+ CPU
> Biostar M7NCG 400 Motherboard
> 256 MB PC2700 DDR SDRAM
That's pretty much all that was connected. The case I bought doesn't have a power or reset button, so I just took them from another case I had and put them on.
So I press power and I hear a very strange noise. Kind of like a malfunctioning fan. But there weren't any fans hooked up besides the PSU, but it is brand new and the noise definitely wasn't coming from there.
Then I start seeing smoke and can smell something burning... definitely from the CPU. I pull the plug on the PSU, try and find something wrong, and then come here asking for help.
One thing I should mention is that I don't have a heatsink and/or fan on the CPU. I can't see this causing a processor to go up in flames though, after running for an entire second...
The Biostar manual is a big POS, but I don't think that there are any jumpers I needed to play with.
What on Earth did I do wrong?
Help much appreciated...