Using Windows DVD Maker is so frustrating

To all tech savvy people. I am having a frustrating problem using my Windows DVD Maker that no one can seems to explain. I have a new computer, less than a month old, running in Windows 7. I have been trying to burn some home movie clips on to DVDs for my various friends and family. I completed 3 or 4 DVDs successfully. All of a sudden, during the burning process, I get to a point about 0.3 to 0.4 percent encoded when I get an error message that the DVD cannot be made due to an unspecified error. Every fresh, new, out of the package disk I try to use ends up with the same message. The clips haven't changed, the filters haven't changed, and the settings haven't changed. I have successfully burned a few DVDs with no problem, now all of a sudden it can't burn any more discs. What happened?
What do I need to do to fix it?
