dvd/cdrw combo-drive with evo n600c notebook

[shabana khan]

I have a Evo n600c notebook with a combo-drive. When I burn a cdrw I cant play it in my hifi. I have checked my hifi and it support cdrw's. I also have an other pc with a burner, when I burn cdrw's with this one I can play it in my hifi. So what is the reason that I can't play cdrw's burned with my combo-drive? The strange thing is that when I have burned the cdrw with my combo-drive I can play it with my pc or notebook wich means that it isnt an empty cd.