Method 1
To resolve this issue, add a step to either the System Center Configuration Manager or Microsoft Deployment Toolkit task sequence to change the 
Locale value of the Default User profile (ntuser.dat) by using a batch file that is located in the machine build. This value is located in the following registry key:
HKEY_USERS\ntuser.dat\Control Panel\International
For example, follow these steps: 
- Create a command file in C:\Temp that is called "SetLocale.cmd." 
 - Copy and paste the following text into the new file, and then save the file:
reg load HKU\ntuser.dat c:\users\default\ntuser.dat 
reg import locale.reg 
reg unload HKU\ntuser.dat
 - Create a new file in C:\Temp that is called "Locale.reg" 
 - Copy the following text into the new file, and then save the file: 
======= 
Windows Registry Editor Version 5.00 
HKEY_USERS\ntuser.dat\Control Panel\International] 
"Locale"="0000041D"
=======
 - Add "C:\temp\SetLocale.cmd" as a new entry in the task sequence. 
Note For MDT you will have to add it to the StateRestore phase. 
Method 2 (for System Center Configuration Manager)
- In system Center Configuration Manager, create a package. For example, create a package that is named "Unattend XML Scripts." 
 - Create an Unattend.xml file that has the correct international settings in the Specialize and OOBE settings, and then save the file in the Package source folder. An example for Windows 7 x86 (32-bit) is as follows: 
<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend">
  <settings pass="specialize">
  <component name="Microsoft-Windows-International-Core" processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <InputLocale>0809:00000809</InputLocale>
  <SystemLocale>en-GB</SystemLocale>
  <UILanguage>en-GB</UILanguage>
  <UserLocale>en-GB</UserLocale>
  </component>
  </settings>
  <settings pass="oobeSystem">
  <component name="Microsoft-Windows-International-Core" processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <InputLocale>0809:00000809</InputLocale>
  <SystemLocale>en-GB</SystemLocale>
  <UILanguage>en-GB</UILanguage>
  <UserLocale>en-GB</UserLocale>
  </component>
  </settings>
 </unattend>
 - In the SCCM OSD task sequence, on the "Apply Operating System" task, set to "Use and unattended or Sysprep answer file for a custom installation," select the package above, and then type the name of the XML. For examply, type Unattend.xml.