Okay, here's the thing. A month ago, I purchased a custom Hypersonic laptop. It took a month for them to build and ship it out. When it got here, there were problems galore with the DVD-RW drive (Toshiba SD-R6472). It kept stalling when-ever I tried to install an OS, failing to read files. I called in, and they sent out a replacement. The same exact thing happened, so I sent both the replacement and laptop back. A week later, they called and returned the laptop. The installation of Windows XP Pro went fine, but now there are other problems. The DVD-RW drive keeps vanishing at odd times, and I can't seem to track a certian cause. Other times, it appears, but is registered as a CD-RW. There is one unknown device listed in the Manager, and I can't get anything on it except the location: on PCI standard ISA bridge. Can anyone offer advice, or has had similiar experiance?