Files ready to be written to the disc

<p>You say you left-click to "expand" the disc image. If the file is an ISO, by default Windows 10 will mount the disc image and assign it a drive letter. In other words, Windows treats it as if you had put a physical disc into your physical drive.</p><p><br></p><p>Now, it's possible that burning the files directly from that mounted image is buggy — I can't say for sure, since I've never tried that. But anyway, you could try this: create a folder on your hard drive (for example, "Burn"), and then drag/drop the files from the mounted image into that folder to copy the files to your HD. Now try to burn from there.</p><p><br></p><p>But as suggested, a 3rd party tool is probably the best idea. <span style="color: rgb(0, 0, 0); background-color: transparent;">I've always used Imgburn to burn discs. It's free and reliable. Be sure to choose Burn Files/Folders to Disc.</span></p>