sh*t, I would like to give this a shot... But I've got a KT333 and I don't want to f*ck my pc up...

How do I know wether my pc has been configured with APIC ON allready? (I haven't installed winxp on it myself, the shop did it for me :D)

I think that it does. Not sure tho. I'll pop in my win2k disc tonight and see if I can do the F5 thing and find the ACPI Uniprocessor PC selection.

I STRONGLY RECCOMEND FOR ALL VIA CHIPSET USERS:

1.To either make backups before taking the plunge
2.Try installing WinXP with ALL of your peripherals, other than HDD and Video, removed and then work up from there, on a separate partition or something so you dont lose valuable data.

I really don't know what causes the VIA chipsets to crash and BSOD all over the place, maybe its memory timings?

Also, If you have an ECS K7S5A motherboard, PM me and I will send you an updated BIOS that adds APIC support! Sweet! :o

Run MSINFO32 and see if you have 22 IRQs :D

My 2nd computer is a 2000+ based on a K7S5A mb, is this mobo overclockable too? Is it the latest OC bios? Do you have an official site for that bios?

Ok mr. Overlord check your PM the link should be there.

I installed the latest overclockerbios frow www.ocworkbench.com but I don't find a feature in the bios to "activate APIC"? Is it on by default and doesn't show in the bios screen?

which version did you install? I have a ECS K7S5A as well, and I have an option called IO APIC in the CPU PnP setup menu.

the very latest oc bios (90355, or something like that)... will have a look later, pc is not hooked up as of now.

I also have a system running on an ECS K7S5A, with an illegal bios that enables OC'ing, is it still possible with that bios with APIC support ? If so, pls send me a link. :ws:

OK, here is the link for the ECS K7S5A unofficial BIOS that allows overclocking and APIC as well!

http://www.ocworkbench.com/bios/ecs/k7s5a/Chb0429f.zip

Have fun, be careful.