Windows 8.1 upgrade error CompareExchange128

Discussion in 'Windows 8' started by gunter, Oct 19, 2013.

  1. gunter

    gunter MDL Novice

    Oct 19, 2013
    #1 gunter, Oct 19, 2013
    Last edited: Oct 19, 2013
    Hello, I have a question about windows 8.1 upgrade. On my computor I have dual boot, both Windows 8 but one is 32 bit and other 64 bit. I upgrade windows 8 32 bit with no problem. When I try to upgrade windows 8 64 bit from store I got error that my CPU dont support new upgrade. When I try upgrade with microsoft file upgrade I got error that CPU don't support CompareExchange128.
    Here is my data from processor
    AMD Athlon(tm) 64 X2 Dual Core Processor 3800+
    AMD64 Family 15 Model 43 Stepping 1, AuthenticAMD
    HTT * Multicore
    HYPERVISOR - Hypervisor is present
    VMX - Supports Intel hardware-assisted virtualization
    SVM - Supports AMD hardware-assisted virtualization
    NX * Supports no-execute page protection
    PAE * Supports > 32-bit physical addresses
    SSE * Supports Streaming SIMD Extensions
    SSE2 * Supports Streaming SIMD Extensions 2
    SSE3 * Supports Streaming SIMD Extensions 3
    SSSE3 - Supports Supplemental SIMD Extensions 3
    SSE4.1 - Supports Streaming SIMD Extensions 4.1
    SSE4.2 - Supports Streaming SIMD Extensions 4.2
    AES - Supports AES extensions
    CX8 * Supports compare and exchange 8-byte instructions
    CX16 - Supports CMPXCHG16B instruction
    So what is missing for MS to upgrade my windows 8
    I don't want to do bypass check because want to know what missing to processor

    MSDNAA MDL Senior Member

    Aug 6, 2013
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. volkoeb

    volkoeb MDL Novice

    Jun 26, 2011
    Hey Gunter!
    You can extract your iso to some folder, find file sources\wica.dll and rename or delete it.
    After this you can start your installation again, all processor compatibility checks will be disabled and you can continue at your own risk.