I just loaded ACAD 2016. when I open me old drawings they have weird lines all over them. I can not select the lines or find any info on them. How do I make them go away?

Try disabling hardware acceleration and see if they go away.

Not sure how to do that.

Via 3DCONFIG.

[QUOTE=2 Eagles]Not sure how to do that.[/QUOTE]
 HELP is your friend.  But briefly -- down in the lower right corner area: 

[QUOTE=John Connor]Via 3DCONFIG.[/QUOTE]
 [That will get you there, but it's really GRAPHICSCONFIG.]

Wild guess on my part.  I knew there was a "config" in there somewhere.  Thanks for clearing that up.

Thanks that work.

But know all the drawings look blurry.

Guess that wasn't the problem then or not the exact problem.  Does you system meet the minimum requirements re: graphics card?  This is a desktop or laptop?

Thank to both of you. I got the blurry line cleaned up. The drawings are looking good again. I just need to learn more about the command know.

And what did you do to fix the problem?

I turned off Smooth line display.

OK.  Thanks for sharing.  You never know when that piece of information may come in handy for someone else experiencing the same problem.  Happy cadding.