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FAQ

Enabling AHCI mode in a system BIOS with Windows Vista already installed will cause a 0x7B INACCESSABLE_BOOT_DEVICE Blue Screen of Death STOP error or system reboot if SATA has been running in IDE mode during Vista's installation.

Product Line: All-in-One PC

Type: Software

Product Name: Wind Top AE2200 Pro

Lastest Updated: Fri, 17 May 2013

Answer

This issue occurs if the AHCI driver (Msahci.sys) in Windows Vista is disabled. This driver must be enabled before you change the SATA mode of the boot drive. Solution: (1) Go to your BIOS: Advanced=>IDE Configuration: set Configure SATA#1 as to IDE. (2) In your Vista, go to HKLM\SYSTEM\CurrentControlSet\Services\msahci\. (3) Edit the "Start" key and change its value to 0. (4) Then reboot the system, go to your BIOS: Advanced=>IDE Configuration: set Configure SATA#1 as back to AHCI, and reboot. Vista will detect the change, install new drivers, ask you to reboot once more.