I have installed two different Windows 7 builds on a particular home-built machine I have at home - build 7000 and now build 7201. The computer was made as a backup machine out of older components, but operates very well when not stressed and utilizing clean installs. However, the machine has a problem I don't understand. I have a DVD burner on the machine - a Samsung SH182H - that has performed well under Vista. When I wiped the machine and installed a clean install of build 7000 when it first came out, Windows recognized the drive and listed it as a "DVD RW" drive in Windows Explorer. I was able to burn a couple of ISOs in the drive using the right-click "Burn Disc Image" menu item, which brought up the dialog box where I could choose my Samsung drive and Burn. However, one day soon after the install, I went to burn an image and when the dialog box popped up, there were no drives listed in the drop-down list box. I just put this down to it being beta software. Anyway, I have now upgraded to a clean install of build 7201. Right from the start after the install, I went to right-click on a ISO to burn the image, the dialog box popped up - and once again, no drives are listed in the drop-down box. The drive is listed in Windows Explorer as "DVD RW" and I am able to read from the DVD drive. The DVD burner is loaded with the latest firmware (S06) from Samsung. Any ideas why the drive is not recognized by the Windows Disc Image Burner application? Any help would be appreciated. Thanks.