How to: Resolve hard drive controller DMA conflict.
Solution:
Open 'System' from 'Control Panel' and use 'Device Manager' to change the DMA setting of the conflicting device.
1) Open the 'Device Manager'.
2) Select the 'View devices by type' radio button.
Device Manager
3) Double-click the 'Hard disk controllers' in the 'View devices by type' list box to expand the list of components.
4) Select the hard drive controller and click 'Properties'. (The hard drive controller 'Properties' dialog box appears.)
Select hard drive controllers
5) Click the 'Resources' tab, and view the information in the 'Conflicting device list' group.
NOTE: The 'Conflicting device list' group will display what resource is in conflict and what device is causing the conflict.
6) Click 'OK' to close the hard drive controller 'Properties' dialog box.
7) Double-click on the device type of the device causing the conflict, select the device, and click 'Properties'. (The 'Properties' dialog box of the device causing the conflict will appear.)
An example device 'Properties' dialog box
8) Click the 'Resources' tab, and select the 'Direct Memory Access' in the 'Resource settings' list box.
9) If the 'Use automatic settings' check box is selected, clear it.
10) Click 'Change Setting...'. (The 'Direct Memory Access' dialog box appears.)
NOTE: If the 'No Modifications Allowed' message box appears, this resource cannot be changed.
11) Select the direct memory access (DMA) from the 'Value' list box.
'No Modifications Allowed' dialog box
NOTE: If the device is not plug and play, you will have to set the resources using hardware jumpers before the resource value can be changed.
12) Click 'OK' to select a new DMA.
'Edit Direct Memory Access' dialog box
13) Click 'OK' again. (The 'System Settings Change' dialog box appears.)
14) Click 'Yes' to restart the computer.
'System Settings Change' dialog box
