Install Windows 7 and start Windows.

After installing Windows, I felt like this problem had been solved for two days. Fortunately, I finally solved it and shared it with my friends who encountered similar problems. Www.2cto.com Background: I am not used to buying a new notebook and pre-installed win8 operating system. I want to switch back to win7. come and ask me for help. Isn't it easy? I never expected that this would be the first nightmare. Process: If your laptop does not have an optical drive, you can directly use UltraISO to burn the iso of win7 to a USB flash drive. Then start the computer with another USB flash drive with the boot function. Note that the bios of the win8 laptop is in UEFI startup mode by default, and other operating systems cannot be installed. You need to change UEFI to Legacy in the BIOS. Here there are different disabling methods based on different vendors. For details, refer to the articles written by others on the Internet. Start the USB flash drive, run the partitioning tool, delete all the partition information, repartition, format, set the active partition, and restart the computer. Replace the USB flash drive with a Windows 7 installation disk. For normal boot, select the partition to which the installation is to be installed. (declare it here because I failed to install it multiple times, in this step, I have encountered the problem of "the installer cannot create system partitions or locate system partitions" several times. My solution is to set the boot sequence to hard disk precedence over USB disks, then, manually choose to start from the USB flash drive when starting, and press F12 on your computer ). After the partition is selected, the system starts to import files from the USB flash drive to the hard disk. After that, the system restarts. Now, the nightmare begins. The system has been stuck on the screen of "Starting Windows ...... This has been repeated several times. Solution: I have read a lot of information on the Internet. I want to change the hard disk mode AHCI to the compatible mode, and I want to disable some BIOS functions, I have some questions about Win8 secure boot, but I want to replace winload.exe with an optical disk (this file was not found in the CD for a long time ......), I tried it one by one. Finally, I used WinPM, another disk partition tool under WinPE, and updated mbr After partitioning (the previous partition tool I did not find the option to update mbr ). Reinstall the system and solve the problem. Guess: the partition of the pre-installed Win8 laptop hard disk is GPT by default. I guess I did not update the MBR when I deleted the original partition information and re-used the mbr mode for partitioning, as a result, the system boot fails and remains stuck in the "Starting windows" area.