Apologies to everyone trying to help. It turns out that the problem is the computer: a 4 month old Asus mini PN50-1. I suddenly remembered that the same thing had happened last August and that the supplier had given me a replacement after I returned the original.
Apologies to everyone trying to help. It turns out that the problem is the computer: a 4 month old Asus mini PN50-1. I suddenly remembered that the same thing had happened last August and that the supplier had given me a replacement after I returned the original.