You may need to change PERMISSIONS to allow you FULL Control Try this -
Right-click on the C:\windows\temp folder. Choose "properties," then "security."
You will see a listing that may include, CREATOR OWNER, SYSTEM, Administrators, Users, and Trusted Installer.
Click once on "Users (ie:your pc information\Users)"
In the permissions window below, the Users entry should have all of the same check-marks as the Administrators entry. To add check-marks, Click the "Users" entry once to hi-light it, and click "Edit." Add the needed check-marks. (Example - tick all the boxes - Full control, Modify, Read, Write etc.) then click Apply - OK