Arduino on comX but cannot choose port through Arduino IDE

Hello,
I have been trying to upload the code to my arduino for some weeks and I have finally been able to get the right driver software. Com3 is given to my arduino but I can't select the port through Arduino IDE software.
Any help will be appreciated.
TARS

Please read this post then add a little more info if you would.

Not really much to go on in your post.