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After you install Microsoft Windows NT 4.0 Service Pack 4 and then run a program that uses the CPUID instruction on a computer that has an Intel Mobile Pentium II or Mobile Celeron CPU (with on-die L2 cache), the function call may incorrectly return one of the feature bits set to a value of one (1) instead of zero (0).
To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to:
152734 how to obtain the latest windows nt 4.0 service pack
For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: