When I try to record to my DVD-RW disk, is says that DVD is not blank. When I go to MY COMPUTER and look at the DVD drive, it says that is a CD. When I look at the properties, it always says the so-called CD is full. I tried formating and using different brand of DVD-RW but it says the same thing. What ever DVD program I sue it always says disk is not blank. Any clue what is going on?