I have a HP Omnibook4150 w/ Win2kPro installed. The laptop came with a Toshiba DVD-ROM (model# SD-C2302) and whenever I have that DVD in, the laptop will not perform a complete power-cycle (either shutdown or restart). Windows closes, but the machine stops responding shortly after and I have to manually power-down the machine when it should be done automatically. HP says they don't know why this happens. I flashed the BIOS with the newest version, and installed newest DVD drivers. The funny thing is that when I have the floppy in, or nothing at all in the laptop's bay, the machine functions perfectly. Why would the DVD cause such problems? Also, when I had Win98se installed I never had this problem. Thanks.