Run CMD as admin and copy/paste:
Code:
takeown /f "%WINDIR%\SysWOW64\Macromed\Flash" /a /r /d y
icacls "%WINDIR%\SysWOW64\Macromed\Flash" /inheritance:r /grant:r Administrators:(OI)(CI)F /t /c
del "%WINDIR%\SysWOW64\Macromed\Flash\*" /s /f /q
takeown /f "%WINDIR%\system32\Macromed\Flash" /a /r /d y
icacls "%WINDIR%\system32\Macromed\Flash" /inheritance:r /grant:r Administrators:(OI)(CI)F /t /c
del "%WINDIR%\system32\Macromed\Flash\*" /s /f /q
takeown /f "%appdata%\Adobe\Flash Player" /a /r /d y
icacls "%appdata%\Adobe\Flash Player" /inheritance:r /grant:r Administrators:(OI)(CI)F /t /c
del "%appdata%\Adobe\Flash Player\*" /s /f /q