Hi, I recently upgraded to a DVD rewriter (from Dell), which worked fine and then I upgraded the RAM from 2x256 Mb SDRAM and included 2 Kingston 512Mb modules (from Dell) to give a total of 1.5 Gb Ram. I originally fitted them in incorrectly and the PC wouldn't work, I then rearranged them and everything worked fine........ Except when I put a DVD in the drive, I get a blue screen and have to shut down. The drive writes to CD's ok but seems to be allergic to DVD's. I tried the Dell Forum, but got no answers. Any Ideas?? Thanx PC: Dell Dimension 8300, Intel P4, Win XP SP2, DVD RW - Philips DVD+RW DVD8701