The CD/DVD drive may not be compatible with the Microsoft AHCI driver (msahci.sys) Next, restart the computer and press any key when you are prompted and start Setup. Be sore the DVD is completely clean and dry before re-inserting into the CD/DVD drive. If the DVD is dirty or smudged, clean the DVD with warm water and a soft cloth. Remove the DVD media and check for scratches, cracks or smudges that may make the DVD difficult to read, if the media is scratched or cracked, you must get replacement media. If your installing Windows to an older PC, the CD/DVD drive may not be compatible with Windows 7 and Windows Vista, the CD/DVD drive may need to be replaced.
To resolve this issue, read the scenario that best describes your situation: My Drive does not appear in Windows Explorer view Note: If your CD/DVD or other drive is not displayed in Windows Explorer view, see the following article: Your CD/DVD drive may be incompatible with the Microsoft AHCI driver (msahci.sys) The CD/DVD drive may not be compatible with Windows 7 or Windows Vista This error can occur if one or more of the following scenarios are true: If you have a driver floppy disk, CD, DVD, or USB flash drive, please insert it now. A required CD/DVD driver device driver is missing.
