DVD+RW not recognized as valid disc

OK....This can't be seen as a hardware issue. I have one disc that I formatted with XP that works fine. My new computer runs Windows 7 and is an EMachine 1850.... Now the darn thing will not recognize an unformatted disc at all...I have about 20 DVD+RW discs that I need to use, but can't format them....I've been to many sites with the Microsoft Support site as most solutions.....That was a...