This problem is most likely to occur on systems with more than oneprocessor.
A race condition exists between process delete and delayed virtualinterrupt processing. This causes a NULL parameter to be passed to theHardware Abstraction Layer (HAL) acquire spin lock routine.
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
Apply Ntoskrnl.exe if the target computer has only one processor.
Apply Ntoskrnlmp.exe if the target computer is a multiprocessor system.
NOTE: After copying Ntkrnlmp.exe to the target computer, rename it toNtoskrnl.exe.
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.