Sorry for the slow response only I’ve been on holiday/vacation and busy over Christmas.
Anyway, I’ve tried all your suggestions to no avail and I have come to the end of my tether.
In an act of desperation I purchased an external USB writer, which, although isn’t ideal, I do now have access to a burner that works.
Nonetheless, at a later date, I will readdress the internal burner issue when I have more free time.
Maybe you will be kind enough to help me again?
Thanks again for all of you help