370R4E series Win8 system down Win7 can not be USB boot, how to solve? (WIN8)

1. Samsung notebook boot will appear when the blue background of the Samsung logo screen, the following figure:

2. When the Samsung screen appears, quickly press the keyboard "F2" key can be.

Step 2. Change the fast BIOS mode setting

1. After entering the BIOS, select "Advanced".

2. Then select to "Fast BIOS Mode", this time is "enabled" status, the following figure:

3. After you select "Fast BIOS Mode", press the "Enter" key on the keyboard.

4. Then select "Fast BIOS Mode" as "Disabled".

 

5. At this point you can see the "Fast BIOS mode" status changed to "Disabled", as shown in the following figure:

Step 3. Change Secure boot settings

1. Select "Boot" in the BIOS.

3. After selecting to "Secre Boot", press the "enter" key on the keyboard.

4. Then select "Secure Boot" as "Disabled".

5. A new option, "Os Mode Selection", appears as the "UEFI OS" status, as shown in the following figure:

6. After selecting "OS Mode Selection", press the "enter" key on the keyboard.

7. Then choose "Os Mode Selection" as "CSM OS".

2. Then select "Secure Boot", which is the "enabled" state, as shown below:

1. After setting, press the keyboard "F10" key.

 

2. At this point the screen will appear to save the prompt, according to the prompts to choose "Yes" can be.

 

1. When the Samsung logo screen turned on, quickly press the keyboard "F10" key.

2. Select "USB2.0" in the menu shown in the following illustration to enable booting up via USB device.