I have someone staying at my house and think they can mess with my settings on my computer, is there anyway that i can put a password up to prevent them from changing any settings like my wireless internet setup, or do i just have to password my whole computer?

Thanks in advance

 

Just create them a separate login that doesnt have the rights to change settings that you don't want them messing with and keep yours pw protected. Not sure what OS you're running but windows lets you easily create multiple log in accounts. If you really want simplicity just create the guest account. They can surf the web or whatever but shouldnt be able to change anything worthwhile.

 

Guest account is perfect.
Also password the log-in page for your router if that's the wireless settings you mentioned.

 

Just hide the power cord or threaten him/her with a skewer