Socket 423?

One of my systems died. It will power on, but it will not post. I have tried different memory and a different video card. And I have tried posting without any drives attached.

So..I got to looking. Its an ABIT-BW7 motherboard with a Socket 423 processor. Is this some odd ball CPU? I looked on several sites and it seems socket 478 is/was the norm for this generation of systems...At any rate I was just wondering if this is worth troubleshooting or if I should scrap it?

Socket 423 was for very early Pentium IV's. Soon afterwards, Intel decided that socket 478 was better.

Powerleap make an adaptor so as you can use 478 CPU's in a 423 board, though. If you must.

Did the board just stop working one day? Are all the capacitors still ok? A few might have burst by now.....

I had an issue where I shut down, then tried to power on, and it wouldnt do anything. So i turned off the PSU for 5 seconds, turned it back on, then fired up the system. the fans would spin up (PSU, CPU, and CASE), but nothing else would happen. The next day I turned it on, and it worked. But after pulling the memory to use in another computer, trying out a 512mb stick of ram, then returning the original 2x 256mb sticks, it won't do anything at all but spin up the fans.

Have you tried reseating the RAM? Might you have knocked anything whilst working on it? Any beep codes??

Have you tried a different power supply? Perhaps your current one is "tripping out" so to speak as it can no longer provide enough juice?

I sure hope its just the PSU tripping out.. Which would explain why I have to turn it off at the PSU and back on again before it spins the fans.

No beep codes at all. There is an LED number on the board, which lights up as 00 and never does anything else.

I tried reseating the ram. I tried using different ram. I've reseated the NIC, Video card, memory, IDE cables, and it still behaves like a mother-in-law....

I will look for another PSU in my trash heap of old stuff.

What would be the minimum recommended PSU for a P-4 423 processor at 1.5ghz?

Not much I wouldn't think.... 300W would be plenty.

Just use the biggest one you've got lying around!

I installed a new 350watt PSU and its up and running again. I was just confused by the fact the bad PSU would still come on, just not do anything else.

Thanks for the advice! Now if I can just find memory that works!