How to Fix ERROR CODE: 0x0000005d – Windows 8

0x0000005d is an error code, encounters while the booting process, when installing Windows 8. This error code is defined as Unsupported Processor. The reason for running into such error is non-compatibility of the processor with Windows 8. As Windows 8 is not accustomed to all versions of Pentium 4 processors, a user might come across to the major problems while setting up this operating system with old processors.

The foremost solution which is always encouraged is checking your PC primary healthiness and restoring any discrepancy that perhaps is bringing about the disturbance:

  • Step 1 : Download Systimizer – PC Cleaner Tool (Compatible with Windows 10, 8, 7 & XP)
  • Step 2 : Click “Scan” to find Windows issues
  • Step 3 : Click “Fix” to eliminate all troubles


In order to get started with setting up windows 8, the compatibility of certain functions must be assured. These functions are briefly described below.

  • NX (No-Execute) bit
  • PAE (Physical Address Extension)
  • SSE2 (Streaming SIMD Extension 2)


All the latest versions of processors are compatible with above mentioned features. In case of non-availability of non-accomplishment of above noted features, Windows 8 will address failures in initialization, under the error code: 0x0000005d.

NX (No-Execute) bit

NX bit, as defined by AMD as No Execute bit, is a feature that isolates the memory and marks certain areas of memory. These marked areas are demarcated as non-executable. The reason for such marking is to protect the computers from certain types of malicious software. Windows 8 necessitates NX feature as a hardware requirement for defending the PC against malware outbreak. It is also referred as XD bit (Execute Disable), a term defined by Intel.

PAE (Physical Address Extension)

Physical Address Extension is a feature encompassed by a 32-bit processor to access a physical memory larger than 4GB. It is classified as a mandatory feature and a pre-requisite to setup Windows 8 on a PC. Windows 8 classifies this feature to be mandatory to assure the accessibility of memory sources.

SSE2 (Streaming SIMD Extension 2)

Streaming SIMD (Single Instruction, Multiple Data) Extension is an updated version of SSE. It is defined as a set of instructions that help computers performing a specific task over various data points. It is increasingly used by third-party applications. Windows require this feature at the time of initialization in order to support third-party hardware drivers.



If the subject Computer incorporates all the required features and still depicts an error code: 0x0000005d, following steps should be carried out to resolve the issue.


  • Check if your system supports all the three features
  • Enter BIOS
  • Enable Data Execution Prevention
  • Enable Virtualization Technology feature


Find out DEP and Virtualization Technology features in your BIOS settings and enable them to fix error code 0x0000005.


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