Hello Michael,

Thank you for using newsgroup!

From your post, do you mean Subsystem for UNIX-based Applications (SUA)?

You may try the following steps to repair Windows Vista:
1. Put the Windows Vista installation disc in the disc drive, and then
start the computer.
2. Press a key when you are prompted.
3. Select a language, a time and currency, and a keyboard or input method,
and then click Next.
4. Click Repair your computer.
5. In the System Recovery Options dialog box, click the operating system
that you want to repair, and then click Next.

More Reference:
==============
929713: A Subsystem for UNIX-based Applications (SUA) application may stop
responding after you install SUA on a Windows Vista-based computer
http://support.microsoft.com/kb/929713/en-us

Thanks & Regards,

Ken Zhao

Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security

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--------------------
| Date: Tue, 13 Feb 2007 14:41:05 -0600
| From: "Michael J. Wheeler" <mwheeler@nospam.nospam>
| User-Agent: Thunderbird 1.5.0.9 (Windows/20061207)
| MIME-Version: 1.0
| Subject: Filesystem Still Case Sensitive After Uninstalling SUA
| Content-Type: text/plain; charset=ISO-8859-1; format=flowed
| Content-Transfer-Encoding: 7bit
| Message-ID: <e35cW96THHA.496@TK2MSFTNGP06.phx.gbl>
| Newsgroups: microsoft.public.windows.vista.general
| NNTP-Posting-Host: mwheeler-pc.pittstate.edu 198.248.217.35
| Lines: 1
| Path: TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSF TNGP06.phx.gbl
| Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.vista.general:38042
| X-Tomcat-NG: microsoft.public.windows.vista.general
|
| Hello,
|
| I installed SUA on my Vista Enterprise desktop machine to attempt to play
| around with it. During the install, I chose to make the filesystem case
| sensitive. After I determined it wasn't what I was looking for, I
| uninstalled it.
|
| Now, it appears my filesystem is still in "case sensitive" mode. If I go
| into Control Panel->System->"Advanced system settings", I get an error
| message saying "Windows cannot find
| 'C:\windows\system32\systempropertiesadvanced.exe' Make sure you typed
the
| name correctly, and then try again".
|
| When I browse to the system32 directory, the executable is there, but
it's
| named "SystemPropertiesAdvanced.exe". The same thing happens with the
other
| "Tasks" within the System Control Panel.
|
| I did find a reference to a registry setting:
| HKLM\SYSTEM\CurrentControlSet\Control\Session
| Manager\kernel\obcaseinsensitive, but setting it to 1 made no difference.
|
| Any other ideas?
|