Article ID: 163852 - View products that this article applies to.
This article was previously published under Q163852
When an Intel processor receives a specific invalid instruction, your computer may stop responding (hang). Your computer must be turned off and restarted to return to normal operation.
NOTE: Although there is no known operating system or application that issues such an invalid instruction, you should be aware that a program can be written maliciously to contain such an instruction. The operating system would not trap this error, as it should, which results in the processor hang.
This problem can occur due to an error in the following Intel processors:
Intel has identified a workaround to this problem that allows the operating system to trap the invalid instruction and not pass it to the processor. Microsoft has worked closely with Intel to provide the following hotfixes:
Windows NT 4.0To 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 the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/152734/EN-US/ )How to Obtain the Latest Windows NT 4.0 Service Pack
For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem.
Windows NT 3.51To resolve this problem for Windows NT 3.51, obtain the following fix.
This fix should have the following time stamp:
This hotfix has been posted to the following Internet location:
11/24/97 12:42p 49,840 Hal.dll 11/24/97 12:42p 48,768 Hal486c.dll 11/24/97 12:42p 65,648 Halapic.dll 11/24/97 12:42p 46,704 Halast.dll 11/24/97 12:42p 81,056 Halcbus.dll 11/24/97 12:42p 79,200 Halcbusm.dll 11/24/97 12:42p 46,912 Halmca.dll 11/24/97 12:42p 67,696 Halmps.dll 11/24/97 12:42p 40,480 Haloli.dll 11/24/97 12:42p 53,744 Halsp.dll 11/24/97 12:42p 49,840 Halws3.dll 11/24/97 12:42p 41,072 Halwyse7.dll 11/21/97 01:35p 821,904 Ntkrnlmp.exe 11/21/97 01:34p 810,016 Ntoskrnl.exe
Windows 95A fix for Windows 95 is not yet available.
Windows NT 4.0Intel has confirmed this to be a problem in the Intel processors listed above. 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.
Windows NT 3.51Intel has confirmed this to be a problem in the Intel processors listed above. A supported fix is now available from Microsoft, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.
Windows 95Intel has confirmed this to be a problem in the Intel processors listed above. Microsoft is researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
Article ID: 163852 - Last Review: September 22, 2005 - Revision: 4.1