Hi,

I have some strange problem with my Socket A machine. That's inside:
- Athlon @800MHz
- Gigabyte 7IXE4 mainboard
- 256MB PC100 SDRAM
- 16GB+30GB hard drives
- 3com 905 network card
- SB AWE32 PnP + CS4630 PCI sound card
- Voodoo2
- Matrox G450 AGP (at the moment...)
So what's the problem? Sometimes when I exchange a PCI or AGP card, my AWE32 stops working: FM and MIDI are still fine, but no digitized sounds. DIAGNOSE and some DOS games complain about DMA channel wrong. I tried to reset CMOS and PnP data, but that doesn't seem to work. The only way to get the AWE32 back to work is to remove all PCI cards (except graphics card), boot the system once (POSTing is enough, no OS boot needed), switch it off and re-insert all the other cards. Then everything is back to normal.
This seems to occur randomly when I swap or exchange some PCI cards or the AGP graphics card. Other soundcards are also affected. The PCI cards I use are fine, problem also occurs with different network, PCI sound card etc. CPU and RAM are ok (checked with different Socket A board).
I suspect that there is some configuration problem but I don't know where to start looking. Any ideas? Thanks in advance.