Win7 system to open the hard disk AHCI blue screen phenomenon how to solve

Solution:
1, click the "Start" button, type "ldedit" in the search box, press the Enter key to open "ldquo; Registry Editor & rdquo; window. Windows 7 does not display the "Run" command by default in the "Start" menu, but the search box can be used instead of this function (or directly press the Windows key + R key to enter);
2, in &ldquo ; Registry Editor "rdove the title bar of the window to the HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesmsahci branch, then in the right window, double-click "Start""; The value in the Value data box is changed from 3 to the number 0 (as shown in Figure 2 above), click “OK 
4. Close the "Registry Editor" window and restart the computer;
5, enter the BIOS setup interface when restarting the computer, change the hard disk to AHCI mode. For example, for the author's computer, press the F1 key to enter the BIOS when starting the computer, select Devices→ ATADrivesSetup→ ConfigureSATAas→ AHCI (Figure 3), and finally press F10 to save and exit the BIOS.
After modifying the registry and enabling the hard disk AHCI mode as described above, you can start it normally without reinstalling the system. Although the startup speed of the computer will not change, when you copy a large number of files, you can see that there is a certain acceleration effect.
Note: Different motherboards enter the BIOS shortcut keys and the location of the AHCI item in the BIOS is different. You can read the manual provided with the motherboard to confirm.
Normally, the default IDE mode of the hard disk is enabled in the BIOS, and AHCI is the abbreviation of AdvancedHostControllerInterface, which means the advanced host controller interface. It is a technology led by Intel and can be improved to some extent. The speed of the SATA hard drive is recommended to open.
In Windows Vista SP1 and later systems, the driver is automatically installed after the BIOS changes the hard disk to AHCI mode. However, if you are using a VistaSP1 operating system, you will need to manually load the AHCI driver through the Windows installation CD when you start the computer. If there is no installation CD for Windows system, please change back to IDE mode, download and install AHCI driver after booting the computer, then enter BIOS to change hard disk to AHCI mode.