No DMA controller on my A7N8X?

After building a new system recently, I found that my hard drive was performing really slowly. I did a benchmark in Sandra and came up with a transfer speed of 2.8 Mb/s - on an 80Gb ATA-133 7200RPM Maxtor Diamondplus 9 drive. Going into Device Manager, I found that my primary IDE channel was using 'PIO Mode' and not DMA. No matter what settings I try to use in BIOS and Windows, it always shows PIO Mode. Anybody else had this problem? I don't know what else to do. I've got the latest nForce2 chipset drivers installed. System specs are:

Athlon XP 2200+ / Asus A7N8X / 512MB Corsair PC3200 / GeForce4 Ti4400 / Soundblaster Audigy X-Gamer / Maxtor 80GB ATA-133 7200 RPM / Cornerstone P1650 21" monitor / Win2K + SP3 / DX8.1

Thanks for the reply, but unfortunately the latest (and only) BIOS for the A7N8X, along with the nForce2 driver set, give you NO option ANYWHERE to specify which DMA mode you want to use. My previous mobo was an Iwill KK266R with the VIA chipset, so I know what you're talking about, but none of those options are available with this board. I do, however, have the HD set up at primary master, and am using an 80-pin cable.

I've been checking around and it seems that the Win2K nForce2 driver set is indeed missing any sort of IDE driver. So my mobo is using the default Microsoft driver which (I heard) doesn't detect DMA and just defaults to PIO. The XP set has an IDE driver, but it's caused quite a few problems. I tried manually installing the XP driver but Win2K says it won't work and doesn't let me do it.

This sucks. Whoever's fault it is, there is currently no way to get DMA enabled under Win2K on the A7N8X. What a bunch of bullsh*t this is...