CD and DVD using 100% CPU, system slow, is DMA set? Tuesday, January 2, 2007 at 8:29 am Windows 2000 Annoyances Discussion Forum Posted by Angus (24 messages posted) I have recently rebuilt a PC, with a new motherboard, CPU (Dual core) and memory. Unfortunately, the system grinds to a crawl when using CD or DVD; sound stutters and the mouse pointer becomes jerky, while simply copying files from CD to hard disk. I can see that CPU load climbs to 100%; I am guessing that DMA is not set or not working, but cannot see how to set it, or where to see if it is set. In device manager there is nothing to set for the drive, for "IDE Channel" it is possible to set either "PIO" or "Use DMA if available", the latter is set as it is on this system (also W2K) where the CD works fine. (And the drive was fine in the older system). I also checked that DMA was enabled in the BIOS, and it is. Any suggestions where to look next? Am I on the right track thinking that this is a Windows "annoyance" or should I be looking more closely at hardware issues? I did find one relevant thread in the XP forum, but it didn't provide any answers. Thanks! Responses to this message: re: CD and DVD using 100% CPU, system slow, is DMA set? (DEX: Tuesday, January 2, 2007 at 1:51 pm) All messages in this thread [show all] CD and DVD using 100% CPU, system slow, is DMA set? (Angus: Tue, Jan 2, 2007, 8:29 am) re: CD and DVD using 100% CPU, system slow, is DMA set? (DEX: Tue, Jan 2, 2007, 1:51 pm) re: CD and DVD using 100% CPU, system slow, is DMA set? (Angus: Tue, Jan 2, 2007, 2:54 pm) re: CD and DVD using 100% CPU, system slow, is DMA set? (C K: Tue, Jan 2, 2007, 3:14 pm) re: CD and DVD using 100% CPU, system slow, is DMA set? (Angus: Wed, Jan 3, 2007, 3:06 am) re: CD and DVD using 100% CPU, system slow, is DMA set? (SOLUTION) (Angus: Thu, Jan 4, 2007, 8:38 am) Reply or follow-up to this message Search this forum Start a new thread on a different subject Report abuse of the forum Return to the Windows 2000 Discussion Forum