This simply stops Windows wasting time updating the time stamp on each folder/subfolder on your computer. This should only be attempted if you have a very large number of folders and you are using NTFS file system.
Click Start and Run.
Type in 'regedit' and press OK.
Locate 'HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Control\FileSystem'.
Right click in the FileSystem directory and select 'New'.
Then select 'DWORD' value.
Enter the name for the 'DWORD' value as 'NtfsDisableLastAccessUpdate'.
Double click on 'NtfsDisableLastAccessUpdate'.
Enter 1 as the value.
Press OK and close regedit.
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