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  1. #1
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    Question WINDOWS 8.1 won't install/load on PC where WIN 8 runs Fine

    WINDOWS 8.1 won't install/load on PC where WIN 8 runs Fine

    As far as System Requirements go, they are the same for WIN 8 and WIN 8.1

    Sympton:
    Windows 8.1 Installation DVD loads for some time, no crcle of dots, then PC reboots
    with quick flash of six lines or so of white text (on black backgound) @ 106 seconds
    Needed to use Smart Phone video camera to capture

    Your PC needs to restart.
    Please hold down the power button ...
    Error Code:0x000000C4
    Parameters:
    0x000...91
    0x000... F
    0xFFFFF800699C5A80
    0x00000000000000000
    0x00000000000000001

    Presumably message is intended for frozen PC, hence 'hold down power button'
    In this case it flashes and re-boots

    Windows 8.1 Image loads quickly, flashes and reboots PC, having corrupted boot entry
    (thankfully not other entries in Boot Manager situated on Dell System Reserved Partition)

    PC Desktops affected:

    Dimension 5000 - shipped JAN'05
    RAM 4GB
    Intel Pentium 4 640 3.20Ghz 64bit NX enabled
    ATI Radeon HD 6450

    Dimension 5150c/XPS 200 -shipped MAR'05
    RAM 3GB
    Intel Pentium D 820 2.80Ghz 64bit NX enabled
    Intel 82945G WDDM 1.0

    Both the above PC's Install and run Windows 8 without a hiccup

    Another 'ancient' machine, but unaffected:

    Precision 490 Desktop - shipped OCT'07
    RAM 4GB
    2 x XEON 5365 3.0Ghz
    ATI HD 6450 (Now HD 7750)

    All 8.0 & 8.1 clean Installs and Upgrades on this platform had no problems

    Hope some of you can throw some light on this. What does WIN 8.1 do in the boot
    process that WIN 8 does not?

    And if anybody has encounterd this before...

    Note to multi booters - keep or reinstall Dell or other System Reserved partition (PRI,Active)
    EasyBCD - Windows Boot Manager held on this partition (eg. 350MB)
    If it gets corrupted, you can Restore it, rather than Gigabytes of 1st Primary O/S
    Also, it will solve a lot of problems, when manipulating/adding/backing up/restoring O/S's

    That's it, happy computing...
    Last edited by zirc99; 2014-08-09 at 21:25. Reason: Correction

  2. #2
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    That error is a driver error. Do you have Win 8.1 drivers available?

    Did you run the upgrade assistant? A download link is available at Upgrade to Windows 8.1.

    Joe

  3. #3
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    Thanks for pointing me in the right direction. Running upgrade assistant (going to Store rejects CPU, but no details)

    Results in:

    X You can't install Windows 8.1 because your processor doesn't support LAHF/SAHF.
    X You can't install Windows 8.1 because your processor doesn't support PrefetchW.

    There are at least three Processor requirements that M'soft does not list for WIN 8.1
    and it's fairly well documented, if you ask the right question, eg.:

    http://www.pcworld.com/article/20586...windows-8.html

    So that's it, exclusion by 'stealth' - at least M'soft told you that processors required NX - Execute Disable Bit
    for Windows 8

    For Intel units, look out for 'VT-x. Have a processor on the way, but will Motherboard pass CMPXCHG16b test?
    AND PrefetchW AND LAHF/SAHF

    Windows 8 support ends 2015, that means people who bought it will have had 2 years use
    WIN 8.1 Upgrade/Update (sic) is free, but costly if it won't run on your machine

    So, those many people who decried Windows 8 and stuck to WIN 7, were right after all
    Early supporters of WIN 8, have been 'betrayed'

  4. The Following User Says Thank You to zirc99 For This Useful Post:

    CLiNT (2014-05-17)

  5. #4
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    Quote Originally Posted by zirc99 View Post
    Thanks for pointing me in the right direction. Running upgrade assistant (going to Store rejects CPU, but no details)

    Results in:

    X You can't install Windows 8.1 because your processor doesn't support LAHF/SAHF.
    X You can't install Windows 8.1 because your processor doesn't support PrefetchW.

    There are at least three Processor requirements that M'soft does not list for WIN 8.1
    and it's fairly well documented, if you ask the right question, eg.:

    http://www.pcworld.com/article/20586...windows-8.html

    So that's it, exclusion by 'stealth' - at least M'soft told you that processors required NX - Execute Disable Bit
    for Windows 8

    For Intel units, look out for 'VT-x. Have a processor on the way, but will Motherboard pass CMPXCHG16b test?
    AND PrefetchW AND LAHF/SAHF

    Windows 8 support ends 2015, that means people who bought it will have had 2 years use
    WIN 8.1 Upgrade/Update (sic) is free, but costly if it won't run on your machine

    So, those many people who decried Windows 8 and stuck to WIN 7, were right after all
    Early supporters of WIN 8, have been 'betrayed'
    You are right about this. They shouldn't have done it. Another not so smart move, alienating even some of the users who actually moved to 8.
    Rui
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    R4

  6. #5
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    Quote Originally Posted by zirc99 View Post
    Running upgrade assistant (going to Store rejects CPU, but no details)

    Results in:

    X You can't install Windows 8.1 because your processor doesn't support LAHF/SAHF.
    X You can't install Windows 8.1 because your processor doesn't support PrefetchW.

    There are at least three Processor requirements that M'soft does not list for WIN 8.1
    and it's fairly well documented, if you ask the right question, eg.:

    http://www.pcworld.com/article/20586...windows-8.html

    So that's it, exclusion by 'stealth' - at least M'soft told you that processors required NX - Execute Disable Bit
    for Windows 8

    So, those many people who decried Windows 8 and stuck to WIN 7, were right after all
    Early supporters of WIN 8, have been 'betrayed'
    This is a useful post. I am surprised that Microsoft would change hardware requirements between two different update levels of the same operating system. They usually try to support "Legacy" hardware. Is this an older computer that you "upgraded", or is this PC less than two years old? If I were you, I would contact both Microsoft and the vendor of your PC and ask them what they intend to do about it.

  7. #6
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    Quote Originally Posted by Prescott View Post
    This is a useful post. I am surprised that Microsoft would change hardware requirements between two different update levels of the same operating system. They usually try to support "Legacy" hardware. Is this an older computer that you "upgraded", or is this PC less than two years old? If I were you, I would contact both Microsoft and the vendor of your PC and ask them what they intend to do about it.
    This is a known situation. There are other posts on the Lounge and the issue showed itself right when 8.1 was released.
    Rui
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    R4

  8. #7
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    Quote Originally Posted by ruirib View Post
    You are right about this. They shouldn't have done it. Another not so smart move, alienating even some of the users who actually moved to 8.
    Especially when Microsoft has done so much work to get it to run well on slower device-level components for which old systems running high end P4s and Pentium D and many old Athlon processors are still more than adequate for. I guess either way it doesn't matter though because since Win 8 is not popular and pretty stiffly priced it wouldn't see a lot of installs in that excluded category anyway and if it were popular those old crates would be getting replaced with new ones more rapidly instead of being upgraded.

  9. #8
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    Thanks to all contributors...

    Problem **RESOLVED** for Dimension 5150c/XPS200, for this PC anyway...

    Solution: Intel Processor with VT-x (Pentium D 940 3.20Ghz)

    Step 1. - Fit processor (Thermal Compound - Arctic Silver 5)
    Step 2. - BIOS (A07) Enable - Virtualization Technology
    - Enhanced SpeedStep Technology (while you're at it)

    Result: - WIN 8.1 DVD loads
    - WIN 8.1 BackUp Image (of another PC) boots
    Devices are made ready...
    Only adjustment necessary - Update Display driver in Device Manager

    Fitted Refurbished FAN [7.99 inc p.p.) and hey presto, a fast quiet PC with a small
    footprint (Runs hot - air thro' heatsink goes right over HDD, hence it clocks 52'C-53'C
    Anybody wanting a Home/SBE PC would be impressed with the performance (not gamers) Vintage 2005
    (WIN 7 64 bit is particularly fast as it sits at beginning of Drive)

    Hard Disk - WD10EALX 1TB Read 131 MB/s Write 127 MBs (Crystal DiskMark)
    The Dell specs don't specify SATA I or II (500MB/s for PCIe x1 could be a clue)
    but as the performance is same as on PC with SATA II (3 Gbit/s)
    This OP is happy
    Last edited by zirc99; 2014-08-12 at 19:21.

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