Hi,

I've recently done a reinstall of Win98 SE and am now having problems with my Toshiba DVD (16*/40*) (model SD M1502) and DMA settings.

In order to watch a DVD movie, DMA needs to be enabled to get smooth playback. However, if I use the drive as a CD Rom,to install application for instance, without disabling the DMA in device manager my computer locks up and I occasionally get the 'blue screen of death.' However, if I disable the DMA and reboot everything is ok when I use the DVD as a CD ROM, save the fact that DVDs don't play smoothly, unless I enable DMA, reboot... and so on.

The problem started after I formatted and reinstalled Windows98, which I've no done twice but the problem persists. As a result, I doubt the problem I have is a hardware issue.

I'm running a BCM board (BC 133KT-100) with a VIA chipset (I've updated the bus master controller to version 1.32 which I believe is the most recent, or close to it), Athlon 850, 256 pc133, Mat****a CDRW 7585 (on secondary IDE as slave), Toshiba DVD (on secondary IDE as master) and my hard drive is on the primary IDE as master. I've doulble checked all the jumper settings on the drives.

I've also tried setting up the DVD on the primary IDE as a slave and the CDRW on the sec IDE as master to see if that would fix my problem, but alas to no avail.

Does anyone have any suggestions on how to fix this very annoying problem?

Thanks in advance for any suggestions.