I have a Compaq C300 laptop and when I try to make restore discs, I get an error saying the disc burned with errors half way through the process. I tried copying a DVD with DVDFab and Roxio and still doesn't work. I've tried it with 3 different hard drives with Win 7, Vista and XP. Using DVDFab in Win 7 the DVD will burn but the movie constantly freezes and you can see on the burned side of the disc that there are parts that didn't burn. With Vista the burn process stops midway with error message. With XP The burn process completes, but the disc is blank. I also can't write to or format DVD's in Windows but with all 3 OS's I can burn and copy CD's and there is no problem reading any discs. I put the DVD drive in an identical laptop and it works perfectly. Could there be a motherboard hardware problem that would only affect DVD burning?