Open ImgBurn and click on "Tools" located on the menu bar and select "Settings"
click on the "Build" tab and make sure there is a check mark in the following boxes
1..Check 'Close Program'
2..Don't Prompt Image Details
3..Don't Prompt VIDEO_TS Content
4..Don't Prompt Volume Label
any other boxes can stay as they are.
To set the write/burn speed do the following
Put a blank disc into the drive/burner, with ImgBurn open make sure your drive is selected in the target window..(lower leftside)
Now on the right hand side click on the "Device" tab, now on the very bottom right you'll see three buttons click on the top button to open the write speed settings page.
On the lower left side under "Settings" you will see a window next to "Disc ID" which will contain the MID(Media ID) of the blank disc that you have in your drive/burner, just below that window is where you can set the burn speed for that perticular MID once you enter the write speed click on the "ADD"...NOTE..each time you buy a new spindle of media you should check the MID becuase it can change even when using the same brand name.
the other dropdown window below is for setting a perticular drive/burner if you have more then one and one of them has better results with that MID
Please note that if you use a double layer disc you'll still have to choose a layer break position