User and Reference Guide

  • 2020
  • 07/29/2020
  • Public Content

Unable to Halt the CPU

Executing proper commands does not result in actual CPU halt.
CPU run control is not enabled in BIOS settings
Enable CPU run control in BIOS settings.
The Intel® Boot Guard technology is enabled. It does not allow for CPU run control even if the latter is enabled in BIOS settings.
Disable the Intel® Boot Guard by setting the profile to 0.

Product and Performance Information


Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804