win7，64位旗舰版，安装sp1前，因为怀疑ie9不是64位的，果断删除（在升级补丁里可以看到）。之后后悔莫及。

重新下载安装，失败，提示未知错误，重启不重启的，折腾很久，无果。

因为一直没有装64位的sp1，就顺便装了下，我认为这个后最后的成功安装没有关系，只是备案参考。

sp1安装成功后，仍然不能。遍寻网络资料，发现可以检查“c:\windows\ie9_main.log”，里面有每次安装失败原因的记录。如下：

过长，有删减。

00:00.000: ====================================================================
00:00.000: Started: 2011/08/19 (Y/M/D) 08:36:54.802 (local)
00:00.000: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.000: Command line: "C:\Users\Super1\Desktop\IE9-Windows7-x64-chs.exe"
00:00.000: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.015: INFO:    Previous version of Internet Explorer: 8.0.7600.16385
00:00.015: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.031: INFO:    ...and 9.1.0.0...
00:00.031: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.031: INFO:    iexplore.exe version check success. Install can proceed.
00:00.031: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:00.031: ERROR:   === FindResource (7006,"IE9-neutral.Extracted.cab") failed with 0x716

00:00.031: INFO:    Trying to extract ID: 7010 (2052) as "ielangpack-CHS.CAB"
00:00.031: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:00.093: INFO:    Operating System: Windows Workstation: 6.1.7600
00:00.093: INFO:    Windows 7 operating system detected.
00:00.093: INFO:    Service pack major: 0
00:00.093: INFO:    Service pack minor: 0
00:00.093: INFO:    Version Check of C:\Windows\System32\drivers\dxgmms1.sys: 6.1.7600.16385 >= 6.1.7600.16748 (False)
00:00.140: INFO:    Download for KB2454826 initiated. Downloading
http://go.microsoft.com/fwlink/?LinkID=207220 -> KB2454826_x64.msu.
00:00.171: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
00:43.821: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9D7C8.tmp\KB2454826_x64\Windows6.1-KB2454826-v2-x64.cab /quiet /norestart
01:20.309: INFO:    Process exit code 0x00000BC2 (3010) [The requested operation is successful. Changes will not be effective until the system is rebooted. ]
01:20.325: INFO:    The neutral pack was successfully downloaded from the internet. Installation will continue using the downloaded package.
01:20.325: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
01:20.340: INFO:    No reboot logic message NrApiStart(0), lParam=0x000267d0 returned 0x00000000.
01:20.964: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000001 returned 0x00000000.
01:21.152: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
01:21.183: INFO:    Installing with the downloaded package. C:\Windows\TEMP\IE9D7C8.tmp\IE9-neutral.Downloaded.msu
01:21.323: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9D7C8.tmp\IE9-neutral.Downloaded\Windows6.1-KB982861-x64.cab /quiet /norestart
02:07.780: INFO:    Process exit code 0x00000BC2 (3010) [The requested operation is successful. Changes will not be effective until the system is rebooted. ]
02:07.780: INFO:    Setting registry to check if Internet Explorer is the default browser on first run: SUCCESS.
02:07.780: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9D7C8.tmp\ielangpack-CHS.CAB /quiet /norestart
02:37.561: INFO:    Process exit code 0x00000BC2 (3010) [The requested operation is successful. Changes will not be effective until the system is rebooted. ]
02:37.561: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x00000bc2 returned 0x00000000.
02:37.561: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
02:37.561: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
02:37.561: INFO:    Checking it the Internet Explorer Optional Component is enabled.
03:44.844: INFO:    Disabling active setup.
03:44.844: INFO:    Added command to re-enable active setup after install and reboot.
03:44.860: INFO:    PauseOrResumeAUThread: Successfully resumed Automatic Updates.
03:44.860: INFO:    Setup exit code: 0x00000BC2 (3010) - Installation Succeeded. Reboot required.
03:44.906: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE9D7C8.tmp
03:44.953: INFO:    Unable to remove directory C:\Windows\TEMP\IE9D7C8.tmp, marking for deletion on reboot.
03:44.953: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.031: Started: 2011/09/03 (Y/M/D) 12:41:04.013 (local)
00:00.031: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.031: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs.exe"
00:00.047: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.062: INFO:    Previous version of Internet Explorer: 9.0.8112.16434
00:00.062: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.062: INFO:    ...and 9.1.0.0...
00:00.062: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.062: ERROR:   A newer version of Internet Explorer is already installed on the system.
00:00.062: ERROR:   Internet Explorer version check failed.
00:08.377: INFO:    Setup exit code: 0x00009C48 (40008) - A more recent version of Internet Explorer is installed.
00:08.471: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE9775C.tmp
00:08.486: INFO:    Unable to remove directory C:\Windows\TEMP\IE9775C.tmp, marking for deletion on reboot.
00:08.486: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.062: Started: 2011/09/03 (Y/M/D) 12:44:37.714 (local)
00:00.140: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.171: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs.exe"
00:00.187: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.343: INFO:    Previous version of Internet Explorer: 8.0.7600.16723
00:00.374: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.390: INFO:    ...and 9.1.0.0...
00:00.468: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.530: INFO:    iexplore.exe version check success. Install can proceed.
00:00.546: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:01.919: INFO:    Trying to extract ID: 7010 (2052) as "ielangpack-CHS.CAB"
00:01.919: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:02.621: INFO:    Operating System: Windows Workstation: 6.1.7600
00:02.621: INFO:    Windows 7 operating system detected.
00:02.636: INFO:    Service pack major: 0
00:02.636: INFO:    Service pack minor: 0
00:02.652: INFO:    Version Check of C:\Windows\System32\drivers\dxgmms1.sys: 6.1.7600.16748 >= 6.1.7600.16748 (True)
00:02.667: INFO:    Version Check of C:\Windows\System32\xpsrasterservice.dll: 6.1.7600.16699 >= 6.1.7600.16699 (True)
00:02.683: INFO:    Version Check of C:\Windows\System32\d2d1.dll: 6.1.7600.16763 >= 6.1.7600.16699 (True)
00:02.699: INFO:    Version Check of C:\Windows\System32\WMVDecod.dll: 6.1.7600.16597 >= 6.1.7600.16597 (True)
00:02.699: INFO:    Version Check of C:\Windows\System32\ExplorerFrame.dll: 6.1.7600.16623 >= 6.1.7600.16623 (True)
00:07.425: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
468:31.786: INFO:    The neutral package download timed out. Wait return value was 0x00000102 (0)
468:34.001: INFO:    The neutral pack was not successfully downloaded from the internet. Installation will continue using the extracted package.
468:34.048: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
468:35.561: INFO:    No reboot logic message NrApiStart(0), lParam=0x001b6860 returned 0x00000000.
468:38.572: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000001 returned 0x00000000.
468:38.587: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
468:38.618: INFO:    Installing with the extracted package. C:\Windows\TEMP\IE94FD4.tmp\IE9-neutral.Extracted.cab
468:38.665: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE94FD4.tmp\IE9-neutral.Extracted.cab /quiet /norestart
469:17.900: INFO:    Process exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
469:17.900: ERROR:   Neutral MSU installation failed (exit code = 0x00003715 (14101)).
469:17.931: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE94FD4.tmp\ielangpack-CHS.CAB /quiet /norestart
469:20.536: INFO:    Process 'C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE94FD4.tmp\ielangpack-CHS.CAB /quiet /norestart' exited with exit code 0x800F081E (-2146498530)
469:20.552: ERROR:   Language package installation failed (exit code = 0x800f081e (2148468766)).
469:20.552: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x800f081e returned 0x00000000.
469:20.567: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
469:20.583: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
469:20.676: INFO:    PauseOrResumeAUThread: Successfully resumed Automatic Updates.
469:25.746: INFO:    An unknown error occurred. Check the return value online as a Windows Error Value for more information.  Setup exit code 0x800F081E (-2146498530)
469:25.793: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE94FD4.tmp
469:25.840: INFO:    Unable to remove directory C:\Windows\TEMP\IE94FD4.tmp, marking for deletion on reboot.
469:25.840: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.062: Started: 2011/09/04 (Y/M/D) 04:52:42.894 (local)
00:00.062: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.062: Command line: "C:\Windows\SoftwareDistribution\Download\Install\WU-IE9-Windows7-x64.exe" /WU
00:00.062: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.093: INFO:    Previous version of Internet Explorer: 8.0.7601.17638
00:00.109: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.109: INFO:    ...and 9.1.0.0...
00:00.109: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.109: INFO:    iexplore.exe version check success. Install can proceed.
00:00.109: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:00.686: ERROR:   Failed to extract a language pack for a non-english OS.

00:00.686: INFO:    This is an English only package, so installation will continue on this non-English OS.
00:00.702: INFO:    IE Setup Language pack included: C:\Windows\TEMP\IE9253B.tmp\ieLangPack-chs.cab
00:00.702: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:01.216: INFO:    Operating System: Windows Workstation: 6.1.7601 (Service Pack 1)
00:01.216: INFO:    Windows 7 operating system detected.
00:01.216: INFO:    Service pack major: 1
00:01.232: INFO:    Service pack minor: 0
00:01.232: INFO:    Service pack name:  Service Pack 1
00:09.126: INFO:    Windows Update user chose to install.
00:09.188: INFO:    The neutral pack was successfully downloaded from the internet. Installation will continue using the downloaded package.
00:09.204: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
00:09.219: INFO:    No reboot logic message NrApiStart(0), lParam=0x00636940 returned 0x00000000.
00:10.171: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000001 returned 0x00000000.
00:10.171: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
00:10.186: INFO:    Installing with the downloaded package. C:\Windows\TEMP\IE9253B.tmp\IE9-neutral.Downloaded.msu
00:10.358: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9253B.tmp\IE9-neutral.Downloaded\Windows6.1-KB982861-x64.cab /quiet /norestart
00:24.445: INFO:    Process exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
00:24.445: ERROR:   Neutral MSU installation failed (exit code = 0x00003715 (14101)).
00:24.445: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9253B.tmp\ieLangPack-chs.cab /quiet /norestart
00:25.865: INFO:    Process 'C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9253B.tmp\ieLangPack-chs.cab /quiet /norestart' exited with exit code 0x800F081E (-2146498530)
00:25.865: ERROR:   Language package installation failed (exit code = 0x800f081e (2148468766)).
00:25.865: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x800f081e returned 0x00000000.
00:25.865: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
00:25.943: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
00:26.177: INFO:    An unknown error occurred. Check the return value online as a Windows Error Value for more information.  Setup exit code 0x800F081E (-2146498530)
00:26.333: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE9253B.tmp
00:26.364: INFO:    Unable to remove directory C:\Windows\TEMP\IE9253B.tmp, marking for deletion on reboot.
00:26.645: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.000: Started: 2011/09/04 (Y/M/D) 06:06:57.664 (local)
00:00.000: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.000: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs (2).exe"
00:00.000: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.016: INFO:    Previous version of Internet Explorer: 8.0.7601.17638
00:00.016: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.016: INFO:    ...and 9.1.0.0...
00:00.016: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.016: INFO:    iexplore.exe version check success. Install can proceed.
00:00.016: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:00.234: INFO:    Trying to extract ID: 7010 (2052) as "ielangpack-CHS.CAB"
00:00.250: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:00.702: INFO:    Operating System: Windows Workstation: 6.1.7601 (Service Pack 1)
00:00.702: INFO:    Windows 7 operating system detected.
00:00.702: INFO:    Service pack major: 1
00:00.702: INFO:    Service pack minor: 0
00:00.702: INFO:    Service pack name:  Service Pack 1
00:00.796: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
00:02.886: INFO:    The neutral pack was successfully downloaded from the internet. Installation will continue using the downloaded package.
00:02.902: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
00:02.917: INFO:    No reboot logic message NrApiStart(0), lParam=0x00496880 returned 0x00000000.
00:03.526: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000000 returned 0x00000000.
00:00.000: ====================================================================
00:00.015: Started: 2011/09/04 (Y/M/D) 06:10:04.351 (local)
00:00.078: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.093: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs (2).exe"
00:00.109: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.561: INFO:    Previous version of Internet Explorer: 8.0.7601.17638
00:00.624: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.655: INFO:    ...and 9.1.0.0...
00:00.982: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:01.201: INFO:    iexplore.exe version check success. Install can proceed.
00:01.216: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:02.932: INFO:    Ask user to continue installing English only from a localized package.
00:17.175: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:17.846: INFO:    Operating System: Windows Workstation: 6.1.7601 (Service Pack 1)
00:17.846: INFO:    Windows 7 operating system detected.
00:17.846: INFO:    Service pack major: 1
00:17.846: INFO:    Service pack minor: 0
00:17.846: INFO:    Service pack name:  Service Pack 1
00:17.877: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
00:20.155: INFO:    The neutral pack was successfully downloaded from the internet. Installation will continue using the downloaded package.
00:20.171: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
00:20.186: INFO:    No reboot logic message NrApiStart(0), lParam=0x00316880 returned 0x00000000.
00:21.606: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000000 returned 0x00000000.
00:24.726: INFO:    No reboot logic message NrApiDecisionDialog(2), lParam=0x00000001 returned 0x00000000.
00:24.726: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
00:24.726: INFO:    Installing with the downloaded package. C:\Windows\TEMP\IE9E1B7.tmp\IE9-neutral.Downloaded.msu
00:24.929: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9E1B7.tmp\IE9-neutral.Downloaded\Windows6.1-KB982861-x64.cab /quiet /norestart
00:50.404: INFO:    Process exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
00:50.404: ERROR:   Neutral MSU installation failed (exit code = 0x00003715 (14101)).
00:50.404: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x00003715 returned 0x00000000.
00:50.404: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
00:50.404: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
00:50.435: INFO:    PauseOrResumeAUThread: Successfully resumed Automatic Updates.
00:52.868: INFO:    Setup exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
00:52.915: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE9E1B7.tmp
00:52.946: INFO:    Unable to remove directory C:\Windows\TEMP\IE9E1B7.tmp, marking for deletion on reboot.
00:52.946: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.000: Started: 2011/09/04 (Y/M/D) 06:20:32.617 (local)
00:00.000: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.000: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs (2).exe"
00:00.000: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.000: INFO:    Previous version of Internet Explorer: 8.0.7601.17638
00:00.000: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.000: INFO:    ...and 9.1.0.0...
00:00.000: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.000: INFO:    iexplore.exe version check success. Install can proceed.
00:00.000: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:00.609: INFO:    Ask user to continue installing English only from a localized package.
00:02.247: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:03.058: INFO:    Operating System: Windows Workstation: 6.1.7601 (Service Pack 1)
00:03.058: INFO:    Windows 7 operating system detected.
00:03.058: INFO:    Service pack major: 1
00:03.058: INFO:    Service pack minor: 0
00:03.058: INFO:    Service pack name:  Service Pack 1
00:03.120: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
00:18.331: INFO:    The neutral package failed to download.  Error: 0x800c0008 (2148270088)
00:18.331: INFO:    The neutral pack was not successfully downloaded from the internet. Installation will continue using the extracted package.
00:18.331: INFO:    The no reboot policy and supplemental files failed to download correctly. Wait return value was 0x00000000 (0)
00:18.346: INFO:    No reboot logic message NrApiStart(0), lParam=0x00026880 returned 0x00000000.
00:19.485: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000000 returned 0x00000000.
00:22.527: INFO:    No reboot logic message NrApiDecisionDialog(2), lParam=0x00000001 returned 0x00000000.
00:22.527: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
00:22.527: INFO:    Installing with the extracted package. C:\Windows\TEMP\IE977CF.tmp\IE9-neutral.Extracted.cab
00:22.527: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE977CF.tmp\IE9-neutral.Extracted.cab /quiet /norestart
00:52.760: INFO:    Process exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
00:52.760: ERROR:   Neutral MSU installation failed (exit code = 0x00003715 (14101)).
00:52.760: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x00003715 returned 0x00000000.
00:52.760: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
00:52.776: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
00:52.838: INFO:    PauseOrResumeAUThread: Successfully resumed Automatic Updates.
00:55.069: INFO:    Setup exit code 0x00003715 (14101) [The identities of the manifests are identical but their contents are different. ]
00:55.100: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE977CF.tmp
00:55.116: INFO:    Unable to remove directory C:\Windows\TEMP\IE977CF.tmp, marking for deletion on reboot.
00:55.116: INFO:    Released Internet Explorer Installer Mutex
00:00.000: ====================================================================
00:00.000: Started: 2011/09/04 (Y/M/D) 06:32:53.388 (local)
00:00.000: Time Format in this log: MM:ss.mmm (minutes:seconds.milliseconds)
00:00.000: Command line: "C:\Users\Super1\Downloads\IE9-Windows7-x64-chs (2).exe"
00:00.000: INFO:    Setup installer for Internet Explorer: 9.0.8112.16421
00:00.000: INFO:    Previous version of Internet Explorer: 8.0.7601.17638
00:00.000: INFO:    Checking if iexplore.exe's current version is between 9.0.6001.0...
00:00.000: INFO:    ...and 9.1.0.0...
00:00.000: INFO:    Maximum version on which to run IEAK branding is: 9.1.0.0...
00:00.000: INFO:    iexplore.exe version check success. Install can proceed.
00:00.000: INFO:    Trying to extract ID: 7006 (0) as "IE9-neutral.Extracted.cab"
00:00.437: INFO:    Ask user to continue installing English only from a localized package.
00:01.576: INFO:    Trying to extract ID: 5006 (0) as "IE9-support.cab"
00:02.153: INFO:    Operating System: Windows Workstation: 6.1.7601 (Service Pack 1)
00:02.153: INFO:    Windows 7 operating system detected.
00:02.153: INFO:    Service pack major: 1
00:02.153: INFO:    Service pack minor: 0
00:02.169: INFO:    Service pack name:  Service Pack 1
00:02.200: INFO:    PauseOrResumeAUThread: Successfully paused Automatic Updates.
00:04.087: INFO:    The neutral pack was successfully downloaded from the internet. Installation will continue using the downloaded package.
00:04.119: INFO:    No reboot policy and supplemental files successfully downloaded and extracted for use.
00:04.150: INFO:    No reboot logic message NrApiStart(0), lParam=0x006f6880 returned 0x00000000.
00:05.023: INFO:    No reboot logic message NrApiScan(1), lParam=0x00000001 returned 0x00000000.
00:05.023: INFO:    No reboot logic message NrApiStartInstall(4), lParam=0x00000001 returned 0x00000014.
00:05.023: INFO:    Installing with the downloaded package. C:\Windows\TEMP\IE9C581.tmp\IE9-neutral.Downloaded.msu
00:05.179: INFO:    Launched package installation: C:\Windows\system32\dism.exe /online /add-package /packagepath:C:\Windows\TEMP\IE9C581.tmp\IE9-neutral.Downloaded\Windows6.1-KB982861-x64.cab /quiet /norestart
00:17.457: INFO:    Process exit code 0x00000BC2 (3010) [The requested operation is successful. Changes will not be effective until the system is rebooted. ]
00:17.457: INFO:    Setting registry to check if Internet Explorer is the default browser on first run: SUCCESS.
00:17.472: INFO:    No reboot logic message NrApiInstallDone(7), lParam=0x00000bc2 returned 0x00000000.
00:17.472: INFO:    No reboot logic message NrApiStartFinish(11), lParam=0x00000000 returned 0x00000000.
00:17.472: INFO:    No reboot logic message NrApiFinish(12), lParam=0x00000000 returned 0x00000016.
00:17.472: INFO:    Checking it the Internet Explorer Optional Component is enabled.
00:21.513: INFO:    Disabling active setup.
00:21.513: INFO:    Added command to re-enable active setup after install and reboot.
00:21.528: INFO:    PauseOrResumeAUThread: Successfully resumed Automatic Updates.
00:21.528: INFO:    Setup exit code: 0x00000BC2 (3010) - Installation Succeeded. Reboot required.
00:21.575: INFO:    Cleaning up temporary files in: C:\Windows\TEMP\IE9C581.tmp
00:21.591: INFO:    Unable to remove directory C:\Windows\TEMP\IE9C581.tmp, marking for deletion on reboot.
00:21.591: INFO:    Rebooting computer...
00:21.622: INFO:    Released Internet Explorer Installer Mutex

能看懂的一目了然了，在网上看到一个办法，就是在安装ie9期间，手动找到ie的临时安装解压路径（名字可能不太一样），我的是“C:\Windows\TEMP\IE9C581.tmp\”，找到IE9-neutral.Downloaded.msu，手动安装，结果显示不能成功安装。重新看ie9 log中以前的记录，有“INFO:    Process exit code 0x00003715 (14101) [The identities of the manifests are identical but their
contents are different. ]“，结合：

1.http://caodaping2hh.blogcn.com/articles/%e5%8e%9f%e5%88%9bwindows7%e7%b3%bb%e7%bb%9f%e4%b8%8aie9%e5%8d%b8%e8%bd%bd%e4%b9%8b%e5%90%8e%e6%80%bb%e6%98%af%e8%a3%85%e4%b8%8d%e4%b8%8a.html

2.http://ideapad.zol.com.cn/55/160_546060.html

两篇文章。考虑可能是语言包的问题，我的系统盘没有备份，但是是旗舰版，直接改为英文系统（change the language user……），下载文件

Windows6.1-KB982861-x86.msu
http://go.microsoft.com/fwlink/?LinkId=210143。手动安装运行，中间重启，之后安装ie9，提示语言不对（我安装包选的中文），忽略直接安装。安装成功。

安装不成功的时候，安装滚动条在30%提示安装语言包，会直接跳到90%，然后提示失败。安装正确的时候，滚动条在30%~70%都会平滑增长。另外很多帖子说，需要什么四个补丁，我没有用，直接是sp1，都是系统自己下的补丁，只安装重要更新。在中文下，直接安装Windows6.1-KB982861-x86.msu是不成功的。怀疑确实是因为一些原因导致系统语言文件损坏，或者是微软的bug。

对了，平台是thiknkpadT410，直接是出厂镜像的专业版，升级到旗舰。