To re-enable the typical, or faster, transfer mode for an affected device:
1. Double-click Administrative Tools, and then click Computer Management.
2. Click System Tools, and then click Device Manager.
3. Expand the IDE ATA/ATAPI Controllers node.
4. Double-click the controller for which you want to restore the typical DMA transfer mode.
5. Click the Driver tab.
6. Click Uninstall.
7. When the process completes, restart your computer. When Windows restarts, the hard disk controller is re-enumerated and the transfer mode is reset to the default value for each device that is connected to the controller.