Replace the drive and the problem will almost certainly go away. It's sad, but some drives just will not read certain discs, no matter what you do. The drive may be fine for all other uses but that drive and that specific disc won't work.
Another possibility would be to make a copy of the Windows 7 DVD on your Laptop if it has a DVD burner. The copied disc may work okay. Worth a try.
Yes the drive is questionable.
Plus the symptoms cannot rule out a bad DVD burn. Did you burn it, and how was the ISO supplied?
I did not burn the disc. It is a purchased legitimate copy. Perhaps I'll try Ztruker's suggestion and copy it.
Watch this space.
Nice One ZTruker.
Copied the DVD and it works just fine in my desktop.
Another one of those things I s'pose
Must be something to do with the way the laser is aligned in the drive and how the one on the (commercial) burner was aligned, it just doesn't read that particular disc right.
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