- Start the computer with an MS-DOS boot disk to replace the file if your computer uses the File Allocation Table (FAT) file system on the boot partition.
- Perform a parallel installation of Windows if the boot partition uses the Windows NT file system (NTFS).
- Use the Mv.exe method that is specified in the following article in the Microsoft Knowledge Base: 184408 How to replace in-use Windows NT system files
- Rename the file at a Windows command prompt. To do so, type the following lines at a command prompt, pressing ENTER after each line: ren <drive>:\<path>\<file>.sys <drive>:\<path>\<file>.oldAfter you type these lines, restart the computer. Many files cannot be renamed using the Windows Explorer shell, but can be renamed using a command prompt.
copy <drive>:\<temp folder>\<file>.sys <drive>:\<path>\<file>.sys
The following steps demonstrate how to replace the Win32k.sys file in the %SystemRoot%\System32 folder with the Win32k.sys file located in the C:\Temp folder. You can use variations of this method to replace any file if your installation of Windows is bootable.
- Start Registry Editor (Regedt32.exe).
- Locate the following key in the Windows registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager
- Create a new value by using the following information: Value name: PendingFileRenameOperations Data type : REG_MULTI_SZ Value data: \??\c:\temp\win32k.sys !\??\c:\winnt\system32\win32k.sNote that the value data is typed on two separate lines.
- Quit Registry Editor.
- Restart the computer.