Você pode tentar o método que recebi de um site.
Deleting the windows.old folder manually
1) Open an elevated command prompt
Click start Type: cmd right-click it under programs click Run As Administrator
2) Take ownership
Change the directory to the "Giles Lamb\" folder (e.g. cd d:\Giles Lamb) Type: takeown /F . /A /R /D Y > NUL
3) grant yourself permission
Type: icacls . /grant:r Administrators:(F) /T /L /Q
4) Delete everything
Make sure you close any explorer or command windows that are looking at or inside the Giles Lamb folder (except for the command window you are using). If you don't, you will receive an error while performing this step.
Type: cd ..
Type: rmdir /S /Q windows.old