I have an ASUS A7N8X-E motherboard with an AMD 3200 CPU I just installed - or attempting to... No post, monitor will not energize, just yellow LED status light. This motherboard specs says it supports this CPU. I have changed memory, video I/F and no change. Fans come on. Could it be my P/S does not have enough juice? It is 300W. I will try to come up with another Socket A CPU to try.

What video card do you have installed? YO

Re-insert the video card and try again. YO

You can also try reseting the BIOS with the clear BIOS jumper on the board, this is sometimes needed when you install a new CPU Zee. AMD Athlon 2800+ barton @ 12.5 X 176 : 2200mhz 512Mb Corsair RAM MSI KT6 Delta mobo Leadtek AGP 6600 gt 128Mb 120Gb Seagate HDD

You said that you tried different memory. Are you sure the memory sticks are seated properly? If not, that would also cause the problem of nothing showing up on the monitor.

In fact, without Ram you would still got to the Bios screen... Make sure you vga card is installed properly and don't forget to reset your Bios with the "clear CMOS" jumper. As for the power supply, if you'r setup include's a single hard drive, one optical drive, a mainstream video card and one or two case fan it should be ok. Still, consider upgrading that part. Check out for a short between case and mobo and/or cpu. It would give the same symptoms. AMD 64 3200+ 754 Abit KV8 Pro 1go DDR 400 Kingston FX5700LE 160 gb SATA Maxtor 80 gb WD

I have cleared CMOS. ASUS emailed me back and said to take the mobo out of the case (eliminate any chance of a short), hook up only the video card, monitor, ps and see if I get video output. I should even get an audio beep or short post w/o CPU so I will give that a try. I had tried AGP and PCI video cards so don't believe that is the problem. I am thinking mobo or processor problem at this point. - Maybe mobo is older rev and does not work with AMD 3200 - I saw one email thread surfing around to that effect.