The computer can be started normally in IDE mode and switched to the blue screen after ahci-Solution

I have installed a 32-bit win7 operating system, and the SATA serial port can run normally in IDE mode. However, when I changed the IDE mode to ahci mode in bios, I found that my computer could not be started, the blue screen displays SOPT: 0x0000007b .... then I checked the solution on the Internet.

There are various solutions on the Internet. Below are some of the solutions that I think are feasible:

Method 1:

1. Set the ahci mode of the advanced SATA options of BIOS to ide and enable the USB flash drive,

2. restart the computer to enter the PE system. Here, you can find the hard disk in the PE system. CLICK: automatically install the system to drive C and Start copying the file. When the copy is completed, the system prompts the computer to restart several seconds, note: When the computer is shut down and restarted, when you hear a "Drop" sound, press the "F8" key to enter the BIOS,

3. change the original ide mode to ahci mode and set the hard disk to the first boot mode. Save the hard disk and restart the computer. Press the system to install the hard disk. A secondary black screen is displayed. previously, when Windows 7 was newly installed, the installation disk only copied and decompressed some Windows files and did not register and install the hardware, after setting it to ahci mode, start the computer to enter the installation program and register and install the hardware driver for the hardware. The computer can normally enable ahci mode on the hard disk.

Method 2:

(I believe many of my friends have encountered the problem of starting SATA hard drive ahci in BIOS after installing windows. I recently encountered this problem when I started ahci after installing Windows 7. The system will be normal only after I switched back to ide mode. After testing, we found that if windows is installed in IDE mode, you need to reinstall the system to change the hard disk to ahci mode in BIOS. Is there any way to enable the hard disk ahci mode without reinstalling the system? After some research and consultation, I finally found the following method.
Enable ahci mode after modifying the Registry
1. Click the start button, type regedit (1) in the search box, and press the Enter key to open the registry editor window. Windows 7 does not display the "run" command by default in the "Start" menu, but it can be replaced by the search box (or press the Windows key + r key directly ).
2. In the left-side title bar of the registry editor window, locate hkey_local_machinesystemcurrentcontrolsetservice.

Smsahci branch, and then double-click Start in the right window ".
3. In the "Edit DWORD Value" dialog box that appears, change the value from 3 to 0 (for example, 2) in the "value data" box and click "OK.
4. close the registry editor window and restart your computer.
5. When the computer is restarted, enter the BIOS settings page and 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, and select devices → ata drives setup → configure sataas → ahci (3) in sequence ), press F10 to save and exit the BIOS .)

(Note: I use method 2 to solve my own problems)