is a good sign. LOL
Might be a bad CPU or mobo. You seem to have done all of the intelligent things, remove and replace of mobo or CPU seems to be the only thing left.
I'm posting this as I found a similiar post here... (Thanks Jeff) Any help that you can give is appreciated.
I just built a new computer and I turned it on only to have it beep at me. Just 3 seconds of silence followed by a 1 second beep over and over.
The CPU fan is spinning and the power and reset switches work.
These are my Components:
1) Syntax SV400 Motherboard
2) PC3200 512MB DDR RAM 400MHz
3) Nvidia TNT2 4xAGP (I think) 32MB Video Card
4) AMD Athlon Sempron 2800 CPU
5) LC 300W powersupply
I have the CPU Frequency Select Jumper set to 100MHz.
(This reports the proper speed and temperature on the PC I'm using.)
There are no peripherals connected.
I'm using an almost identical configuration in the PC I'm using to post this message. (This one has everything connected and just a 400W generic P/S.)
I have removed the MB from the case and placed on cardboard.
I have swapped the memory and video card from my working PC, as well as tried a known-good PCI video card... Same.
In fact it beeps with no memory or video card installed at all. (The working one is silent.)
The working one is an AWARD BIOS... Can't tell on the beeping one.
I have sent an e-mail to the place I purchased it... It has a 1-year warranty.
I would prefer to fix it rather than send it back as my client is waiting for their computer.