Win7 system AHCI open blue screen solution

After installing Win7 system, if you use IDE mode, everything is normal. After the AHCI mode is enabled in the BIOS, it will crash, blue screen, unable to start and other faults.
Cause analysis: If the normal hardware failure in the IDE mode is very unlikely, the cause of the problem is generally caused by an abnormality when the WIN7 random AHCI driver matches.
Workaround:
1. In the "Registry Editor" window title bar to the HKEY_LOCAL_MACHINESYSTEM CurrentControlSetservicesmsahci branch, then in the right window, double-click "Start". In the "Edit DWORD Value" dialog box that opens, change the value in the "Value data" box from 3 to 0.

2. Reboot into the system desktop, click the computer right---Properties---Device Manager, as shown in the figure:

3. Uninstall all the devices in the IDE ATA/ATAPI controller, such as Figure:

When the restart option appears, click No.
4. If there is an option that cannot be deleted, it can be ignored.
5. Restart AHCI mode and modify the BIOS, and the system enters the normal
6.Win7 system automatically loads all normal AHCI driver, as shown:


plurality Usually the problem After installing Win7 system in IDE mode, I hope to help you after reading this article.