Common Problem drive says insert disk, who can help?

Hi, ive just burnt a dvd its a TDK DVD+R Disk and it works fine on the dvd player but it doesnt work on my computer, where it was burnt lol. WHen i go to my computer and double click the cd drive it says please insert disk in drive D:.

Now i said this is a common problem because my mate has the same problem at his house, so im guessing its a windows thing.

Any suggestions, solutions greatly apreciated.

Thx
Alex

Eh dont worry about it now it works, stupid windows lol.