Dual graphics computer can not enter PE how to do

A friend is using Acer 4750G, the kind of dual graphics. Recently want to redo a system, with a U disk made a PE. Results with u disk boot is ok, but one into the PE on the blue screen, the code is 0X000000B4 blue. It's impossible to pretend now. What is the reason for this? How to solve the blue screen? Here's a solution to this situation:

The information code from the blue screen shows that you are doing this because "you cannot boot the graphics card, you cannot enter the graphics interface, or there is a hardware conflict with the video card". Since your notebook is a dual graphics configuration, it is recommended to enter the BIOS, first turn off the integrated graphics card, and then try again. If it's still a blue screen, then you need to go into the BIOS and change the drive's transfer mode from AHCI to IDE mode. If it is still a blue screen, it is recommended to redo the PE, and then try to use the PE installation.