I installed an NIC recently on my Win98SE desktop to act as a gateway for an ad hoc wireless network. After some intitial problems, the network functions well. However, my onboard sound card seems to react badly to the new NIC. There is constant static, through which I can hear changes (pops, crackles) as I access the Internet or my LAN. The device manager reports both the sound card elements and the NIC are functioning normally and that there are no conflicts. The only IRQ I found in the device manager corresponded to an element of the sound card. It was on IRQ 5. I tried it on 7 and 9, rebooted each time, but without any change in the static problem.
I looked at the memory ranges of the sound card elements and the NIC but I'm not sure if they overlap or not. In any case, when I tried to access the manual "change settings" for the NIC, I got a warning message that it was not possible to modify the setting.
One other point: the volume icon has disappeared from the taskbar twice since I installed the NIC. I got it back by reinstalling the updated drivers for the sound card each time.
Should I continue along the IRQ/memory overlap route? or is there another possibility?
Would it be simplest to buy a new sound card (external?) and disable the onboard card?
Your advice much appreciated.