Hi! Thanks for your reply, I did find the answer later on the internet, and as long as the computer and the tv are compatible, and I wouldn't know why they wouldn't be, I found the answer.
Make sure your TV is on HDMI (whatever port you've hooked it to) and then press that WIN+P and choose EXTEND DISPLAYS. Then I pressed ENTER and it worked! After that, then I was able to adjust to default display, etc. :)