Windows not recognize itself after new mainboard

xp pro sp2 ntsc disc
forced to move to a different motherboard, boots to safe mode/normal.
choose either. blue screen. stop 7b, 2nd value c0000034.
boot xp pro sp2 cd, the reinstall repair can not recognize the windows installation. only choice is install in same partition.
then get prompt that a windows folder has been found, discussion about multiple os on same...

partition appears normal when viewed by other partition tools. boot.ini is okay, ntldr, and ntdetect.com both present, and it boots.
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  1. c034_noboot said:
    xp pro sp2 ntsc disc
    forced to move to a different motherboard, boots to safe mode/normal.
    choose either. blue screen. stop 7b, 2nd value c0000034.
    boot xp pro sp2 cd, the reinstall repair can not recognize the windows installation. only choice is install in same partition.
    then get prompt that a windows folder has been found, discussion about multiple os on same...

    partition appears normal when viewed by other partition tools. boot.ini is okay, ntldr, and ntdetect.com both present, and it boots.


    http://msdn.microsoft.com/en-us/library/ms940177%28v=WinEmbedded.5%29.aspx?ppud=4
  2. thanks ksiemb for the quick reply.
    but, the problem is a bit more subtle.

    maybe the question should be how does windows determine that
    there is a valid windows installation. is there a must have folder\file or a must have registry key\value to be a valid windows installation?

    booting the xp pro sp2 cd reveals two variants of the same problem

    if R is chosen, the 1:windows choice appears
    choose 1
    usually the next prompt requests the password for the displayed admin rights username, and if supplied correctly the command line prompt appears

    instead the command line prompt appears immediately c:\windows>
    (a SAM exists in windows\system32\config
    but is somehow skipped or missed by the repair console interrogation)

    booting the xp pro sp2 cd again
    and choosing the install option by pressing Enter
    and moving thru the prompts to reach the reinstall repair
    the choice of operating systems to be repaired never appears.
    just the partition table display.
    choose the partition (which has a \windows\ folder)
    select to not format , just use as is.
    then the prompt appears reminding that the partition appears to have
    some other operating system already in place and that installing a FRESH install of windows will require some additional configuration for
    multiple os boot choices.

    neither of these repair processes appears to recognize the windows folder
    and its subfolders as being a valid windows installation.

    the repair reinstall allows for installing the correct drivers for the hardware
    to correct a driver hardware mismatch.

    c0000034 signals no operating system found
    could be driver not able to find the hard drive
    or could be drive is fine, just no os found
    based on the repair options "errors" described
    above the no os appears to be the likely reason
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