hi, my liteon 851s worked fine like a few weeks back, then this morning i burned 2 CDs fine, but when it came to burning a dvd, i inserted a blank dvd-r media, and it wont read it.. tried 3 different kinds of dvd-r and it stil won't read it. then i tried an ordinary dvd, and still,wont read! it reads cds fine though! i havent changed anything from the driver to the firmware..
someone please help me