I'm just posting this for anyone else who has a similar problem...\n\nI have a AX59 Pro with K6-500mhz. Its been working fine with various\ncd drive over the years and even a dvd-rom drive. Anyway I recently\nadded a Samsung cd Writer. Everytime I tried to access a cd in the\nwriter the PC ( Windows XP) would lockup freeze and not respond. After\nmuch investigating I found that having UDMA enabled in bios caused the\nproblem. Set to off in bios and thus forcing (according to XP\nmultiword DMA or forcing PIO mode) corrected the problem.