Windows 8.1 install problems

Typexs

New Member
Messages
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Hello everyone, I need some IT guys help with problem i faced recently.
Then trying to upgrade from win 8 x64 to 8.1 x64, it says that my cpu does not meet minimum requirement, or says that it does not support compareexchange128.
My CPU is Intel quad core q9400. MB intel dp35dp.
The most funny part is that my cpu supports [FONT=WOL_Reg] PAE, NX, SSE2, [/FONT][FONT=WOL_Reg]CMPXCHG16b, PrefetchW, and LAHF/SAHF.
I really don`t know what to do, or where the problem roots are... :([/FONT]
 

My Computer

System One

  • OS
    windows 8
I've not heard of this happening before so an absolute stab in the dark - have you tried resetting to defaults or updating your bios?
 

My Computers

System One System Two

  • OS
    Windows 10
    Computer type
    PC/Desktop
    System Manufacturer/Model
    me
    CPU
    i9
I have tried resetting bios settings to default, but it hasn`t helped.
Because of the Intel, i can`t update my bios, last update they published was in ~2009.
This is ridiculous that microsoft programmers failed so hard...
 
Last edited:

My Computer

System One

  • OS
    windows 8

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
    Screen Resolution
    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
    PSU
    Standard 250 watt
    Case
    Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5"
    Cooling
    Dual case fans + CPU fan
    Keyboard
    Acer Windows PS/2
    Mouse
    Wireless Microsoft Arc
    Internet Speed
    54mbp/s
    Browser
    IE11
    Antivirus
    Defender
    Other Info
    Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1
Hello everyone, I need some IT guys help with problem i faced recently.
Then trying to upgrade from win 8 x64 to 8.1 x64, it says that my cpu does not meet minimum requirement, or says that it does not support compareexchange128.
My CPU is Intel quad core q9400. MB intel dp35dp.
The most funny part is that my cpu supports [FONT=WOL_Reg] PAE, NX, SSE2, [/FONT][FONT=WOL_Reg]CMPXCHG16b, PrefetchW, and LAHF/SAHF.
I really don`t know what to do, or where the problem roots are... :([/FONT]

You may have this solved already, but if not, I have the same problem; "does not support compareexchange128".

My system is dual boot, so I had to jump through a couple of hoops, but if yours isn't, maybe it'll be easier for you.

I formatted the hard drive, reinstalled Windows 8 32 bit, went to Windows Update and searched for updates and installed, then searched again . . . until no more updates were available. I then went to the store and Windows 8.1 32 bit was offered. Nine hours later, I was updated.

I don't know what compareexchange128 is, but whatever it is, Microsoft blew it! The specs should not have been changed when updating. I can imagine that a whole lot of folks had the same problem we have/had or similar.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model
    HP Pavilion 500-056
    CPU
    AMD Elite Quad-Core A8-6500
    Memory
    8 GB
    Graphics Card(s)
    AMD Radeon HD 8570D
    Monitor(s) Displays
    Acer 23"
    Screen Resolution
    1920 X 1080
    Hard Drives
    1 TB
    Keyboard
    Logitech Wave K350
    Mouse
    Logitech M510
    Internet Speed
    Fast
    Browser
    Firefox
    Antivirus
    Windows Defender
Hi, I had Windows 8.1 on my system DP35DP + E6750 , after changing CPU to E8400, system refused to boot.
Reason - CPU does not support Non-execute memory proterction, does not support Virtualization, etc.

After many hours of investigation, i finally tried to re-flash latest version of BIOS ( which already was installed ) - and after re-flashing system correctly recognized all available features of new CPU - and Windows 8.1 x64 boots ok now. So may be all that you need is to re-flash BIOS with new CPU installed.
 

My Computer

System One

  • OS
    windows 8.1
Welcome to Windows EightForums, dshvedchenko.

Thanks for posting your fix. :thumb:

Wonder why that would work, though, since it’s the same BIOS version. :think:
 

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
    Screen Resolution
    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
    PSU
    Standard 250 watt
    Case
    Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5"
    Cooling
    Dual case fans + CPU fan
    Keyboard
    Acer Windows PS/2
    Mouse
    Wireless Microsoft Arc
    Internet Speed
    54mbp/s
    Browser
    IE11
    Antivirus
    Defender
    Other Info
    Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1
Welcome to Windows EightForums, dshvedchenko.

Thanks for posting your fix. :thumb:

Wonder why that would work, though, since it’s the same BIOS version. :think:

1. I tried clear CMOS
2. I tried enter maintenace mode

Every time I put old CPU it was ok to boot Windows 8.1 x64.
But latest BIOS is 1 year later after E8400 was issued, so it shoudl support it.
I think this is kind of bug in BIOS that it writes something CPU depended during flash.
reflash with E6750 ,didn't help. Only re-flash with E8400 inserted helped to resolve my issue.

Before re-flash BIOS does not see Intel Virtualization option with E8400 inserted - after re-flash it shows it.
 

My Computer

System One

  • OS
    windows 8.1
Welcome to Windows Eight Forums, yuhong.

Thanks for posting that! :thumb:
 

My Computer

System One

  • OS
    8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Acer T690
    CPU
    Intel Pentium D Dual Core
    Motherboard
    Acer/Intel E946GZ
    Memory
    2GB (max upgrade)
    Graphics Card(s)
    Intel Graphics Media Accelerator 3000 - PCI Express x16
    Sound Card
    Integrated RealTek ALC888 high-definition audio with 7.1 channel audio support
    Monitor(s) Displays
    Acer AL1917W A LCD
    Screen Resolution
    1440 X 900
    Hard Drives
    350 GB Seagate Barracuda 7200.10
    Thumb drives
    PSU
    Standard 250 watt
    Case
    Desktop 7.2" (183mm) W x 17.5" (445mm) L x 14.5"
    Cooling
    Dual case fans + CPU fan
    Keyboard
    Acer Windows PS/2
    Mouse
    Wireless Microsoft Arc
    Internet Speed
    54mbp/s
    Browser
    IE11
    Antivirus
    Defender
    Other Info
    Office Pro 2013 / Nokia Lumia 1520 Windows Phone 8.1DP GDR1
Um, nobody has talked about this since 2014? Here I am trying to decide what OS to upgrade to on my XP machine and I'm really wondering. I want to go to 8.1 since 8 will not be supported (WTF is That all about MS?!). I see 7 is still supported except for free online or phone support. I want 64 bit so I won't do 8.1 X86, my software needs 64 it.
The machine in question is not terribly old, has a Core 2 Duo in it, lots of ram etc. But I know that it's often the MB that is the culprit. Is there a way to tell if my MB will do it? As usual, MS is about as much help as . . . well, none. I've kept running XP on that machine for a specific reason which has now gone away, so it's upgrade time. I understand 10 has the same issue.
So, how soon will they stop supporting 8? Will it get the same support 7 is getting - updates etc for 5 years? I do want 8 but if I must then 7 it will be.
I just checked and the MB is an Asrock P43TWINS1600.
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model
    Asus N500-JK
    CPU
    Intel Core i7-4700HQ @ 2.4Ghz
    Memory
    6 Gb
    Graphics Card(s)
    Nividia GeForce GTX 850M
    Browser
    Firefox v42
    Antivirus
    Avast
That is fairly easy, just use any CPUID utility. It should show CMPXCHG16B and VT-x for example. If it doesn't you need a BIOS update.
 

My Computer

System One

  • OS
    Windows 8.1
Actually, I went to the Asrock sight to check it out. For my MB they have driver updates for everything up to Win 7. So I concluded that 8.1 would not work and ordered 7 pro. Hope I haven't screwed up, but I used 7 for a long time on my old laptop before it died and liked it pretty much, so . . .

Thank you for the reply. It would be cool to be able to use 8.1 or 10 but having just spent $50 I think it will be awhile before I do. As long as MS supports 7 I guess it'll be okay. (they say until 2020)
 

My Computer

System One

  • OS
    Windows 8.1
    Computer type
    Laptop
    System Manufacturer/Model
    Asus N500-JK
    CPU
    Intel Core i7-4700HQ @ 2.4Ghz
    Memory
    6 Gb
    Graphics Card(s)
    Nividia GeForce GTX 850M
    Browser
    Firefox v42
    Antivirus
    Avast
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