Hi, my DVD writer suddenly began to refuse to burn at high speeds. I can burn dvds at 1-2x even though my DVD writer allows 16x and I can't burn CDs that are 40x but I can that are 10x. This suddenly began after I attempted to burn on a 16x Philips DVD for the first time. I can now no longer burn HP 40x CDs (that I used to use all the time). Is there a way to a) fix this b) figure out a way to limit the speeds that my DVD drive can run at? Thanks in advance.