|if you are the owner of the computer you will most probably have admin rights, to check, control panel/users/your user name|
if a program requires admin rights and you are the admin account, right click on the start/install icon and run as admin, type in your name and password.
if you are not the admin account and just a resticed account then the computer is not yours, and you should not be attempting to install programs without the administrators permission.
you could run a linux usb boot os and install whatever the hell you want onto the linux os..thus using the machine to your hearts content without booting into the actual machine installed OS..
if it is your machine but has been setup by someone else and you require admin rights, ask the person who set it up for the password and change your account to a full admin account, or reinstall the os and make sure you are the administrator..
i hate computers!
but cant help myself....