You have a local administrative rights to your computer running windows 7. You cannot find some of the operating system files on your system volume. What can you do to make them appear?

If you can't find some of your operating system files on your system you would need do the following first go to your control panel then go sound then you should find a system files on there and if not then go to your configure mangement then you will see system then click that then update your computer from there and it should start working.