How to Delete System Files
Why need to delete system files?
The general recommendation is that: do not delete system files, for bad things will probably ensue. Even as an administrator, you do not have the permission to delete or overwrite system files, which is because Windows system files are owned by the TrustedInstaller service by default, and Windows File Protection will keep them from being deleted or overwritten. If the file really affects your system, damaged or infected by virus, there is the way for you to remove it from your computer.
Steps of how to delete system files
Step 1. Open an administrator command by typing cmd into the search box of start menu, and then hit the “Enter”.
Step 2. Run the takeown command to get the ownership of the file:
takeown /f C:WindowsSystem32en-USwinload.exe.mui
Step 3. Run the cacls command to give yourself full control rights of the file:
cacls C:WindowsSystem32en-USwinload.exe.mui /G username:F
Username in the last step is the username of your own. Just submit it there. And now you can delete system files that you want to do.
You can backup your system before you delete any files from it in case the system will be damaged for your wrong deleting. Spotmau PowerSuite Golden can be a nice choice to back up the whole system and restore it with one click. More, it offers a bootable CD for you to boot your system from it, which provides a completely clean operating environment. You can manage your system files under this boot environment more safely.