Ok. I did some looking around, and it ain't easy to find folks trying to
run Win98se on P4s that fast, but I did find a thread.
http://www.abxzone.com/forums/showthread.php?s=&threadid=48476
Ok, so it isn't your board and it isn't even your chipset, but the dern
thing works at 3.06 gig in windows98se.
The things different from when your slower P4 worked are the speed of the
new one, hyperthreading, that you're overclocking the motherboard to run
it, and that you installed it (Don't laugh. What I mean is possible changes
to BIOS settings.).
Ok, that thread shows that the CPU speed alone shouldn't be a killer and it
suggests that neither is the hyperthreading, but I wonder just what state
it's in when the motherboard can neither enable nor disable it. Intel says
it 'must' be disabled in BIOS for win98se but that could simply mean 'not
enabled', if you see what I mean. I.E. If there is a setting it's either
one or the other so 'not one' is 'the other'. But you have 'nothing'. Let's
assume, for the moment, it defaults to the 'disabled' you need.
Next is the overclock. Put it at 100Mhz till the dern thing works, ok? Just
to get that possibility off the table. One it runs you can bump it back up
and worry about 'fixed', or not, PCI/AGP dividers.
Now to BIOS. I don't know what the settings used to be, or if they are the
same, but it seems suspicious that it hangs on installing things that
previously installed. What is "pnp O.S." set for? Reverse it (not pnp is
usually best). Do you have APIC enabled? DISABLE it. Frankly, I'm hoping
this is your problem because win9x (all of them) does NOT support APIC and
that will royally hose it up as windows will be unable to assign the IRQ.
Past that, do a general recheck of your BIOS settings to see if something
is different from when it worked but, as I mentioned, I'm betting on the