New video card slowed down my hard drives

[aarmenaa]

I just bought a Raedon 9000 Pro for an aging computer system, and I'm having some problems with it. I have a PCI IDE controller, to run my ATA 100 hard drives. Under my old video card, the controller reported my drives as DMA5 (the ATA100 stnadard-this is correct). With the new card installed, my controller now reports PIO MODE 4. This is not even DMA quality transfer, and is exceptionally slow.

I thought that maybe the shared IRQ 7 was the problem, and disabled assigning an IRQ to the video in my BIOS. Well, IRQ 7 is still assigned to the vieo card, and I'm still running in PIO 4. That' all I've tried, but I'm gong to reset the ESCD next. I think my problem is that even though the BIOS isn't assigning an IRQ anymore, Windows is remembering the previos setting. How do I force Windows to pick up new settings?

Aarmenaa

PS-If I'm barking up the wrong tree here, tell me. I'm shooting in the dark-there shouldn't be any problems at all with this setup. Has anyone else had this problem before?

Edit:

Computer specs:
MSI K7TPro2 (KT133 chipset, MS6330) w/ AMD Thunderbird 1000
256 MB SDR SDRAM
ATI Raedon 9000 Pro
Promise Ultra100 IDE controller
30GB Maxtor 7200 RPM ATA100 (Primary Master, add-in IDE)
40GB Maxtor 5400 RPM ATA100 (Secondary Master, add-in IDE)
56X CD-ROM (Primary Master, onboard IDE)
48x12x48 CD-RW (Secondary Master, onboard IDE)

[JayMan]

I'd suggest moving the PCI IDE card to a different slot. And see how that goes

JayMan

[aarmenaa]

Yep, I tried that one. Windows reinstalled the drivers for the card, but it still kept the IRQ. I suppose the card is designed to always take that IRQ. I'm going to restart and reset the ESCD and see if I can get the video card to release it's claim on that IRQ.

Update:
Reseting the ESCD didn't work, nothing changed.

I have also tried turning PNP OS on and off, and reseting the ESCD both ways. Still no dice.

Aarmenaa

Another Update:
Here's something funny: the box says this is a 64 MB card, but every program I run says I have a 128 MB card. So who's right? I'm seriously considering returning this card tomorrow-I don't like the looks of this card. I had a card kinda like this once-a Viper II Z200. The...crappiest...card...ever.