Stop error 0xD1 may occur on a computer that is running Windows Vista or Windows Server 2008
On a computer that is running Windows Server 2008 or Windows Vista, you may receive the following Stop error:
STOP 0x000000D1 (
, , , ) DRIVER_IRQL_NOT_LESS_OR_EQUAL
Note: This Stop error may also be caused by other problems.
This problem usually occurs when the Netbt.sys driver is loaded and unloaded frequently.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB973196.