PCI/AGP IRQ conflict in Win2000

[size=11]Frenchy writing from France[/SIZE]
Angry & impatient I am, but first things first, my specs:
PSU: Antec Trueblue 480W
Mboard: K7N2 Delta-L, BIOS 5.2
RAM: 2*512 Mb PC3200 Samsung, set at 400Mhz
CPU: Athlon XP 2400+, set(o/c) at 11*200 (thus 1:1 with RAM)
Winfast Geforce 4Ti 4200 AGP 4X
Creative SBlive 1024 now in PCI slot 3
HSF: Taisol CGK760172, fan in extraction mode (to reduce chipset temp by 5°C!!!)
Enermax 80mm case fan
Two recent HDDs (Maxtor) & optical drives (Liteon)
USB ADSL modem
APIC disabled
OS: Microsh*t Windows 2000, SP4
System status: CPU 49°C, chipset 47°C (weather temp: 41°C!)
Here goes:
My system sometimes crashes when I simultaneously play a movie, and an mp3 (I get a "sound loop", system freezes, no blue screen but I need to reboot) or on even rarer occasions (only once, actually) when I send an email (this time I got the dreaded blue screen.
I have pinpointed a possible and highly probable cause for this: my Vcard and soundcard share the same IRQ (IRQ11 to be precise). My SBlive used to be on PCI slot 2. This was (and still is!) my IRQ share/conflicts table:
[size=11]
IRQ 11   OpenHCD standard USB Host Controller
IRQ 11   OpenHCD standard USB Host Controller
IRQ 11   Standard Enhanced PCI to USB Host Controller
IRQ 11   Creative SB Live! Value
IRQ 11   NVIDIA GeForce4 Ti 4200
[/SIZE]
IRQ11 is thus not shared only by the Vcard & sound card, but something told me that the first 3 lines of the table did not matter, however I've often heard (and read, even in this forum) that having a graphics card & sound card share the same IRQ is definitely not a good idea and should be avoided by all means.
Forgive my lack of knowledge, for I'm but a mere newbie in this matter. This I tried:
- Enabling APIC (whatever it is ?( I just know that it sort of "creates" more IRQs), to no avail: the number of IRQs, their layout and conflicts table remained unchanged.
- Moving SBlive from slot 2 to slot 3 and reinstalling its drivers: NOTHING changed either, soundcard IRQ remained at 11 !!!  ?(  ?(  ?(
Upon entering 'system properties' and 'devices', when selecting the SBlive card, in the 'resource' thumbnail, everything is greyed out, no parameters can be changed! Same thing applies to other devices such as Vcard, too...
A most desperate situation this is, for it would seem that changing a PCI card's IRQ in Windows 2000 is simply IMPOSSIBLE, sacrebleu!
Needless to say, this makes me mad X( , I mean really, really MAD
[ALIGN=center][/ALIGN]  
If anyone could help...

[size=11]Quote
Originally posted by wonkanoby
just changing it makes no difference it must be enabled when the os is loaded
[/SIZE]
Changing WHAT??? If you mean the IRQ, as I said that seems impossible in Win2000 (if somehow could tell me how I'd be most grateful). If you meant changing APIC setting to 'enabled', how do I enable it in windows?
But the question remains: how is it that when changing soundcard's PCI slot its IRQ remains unchanged?? ?(

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