Samsung notebook installation system times wrong: Image failed to verify with * Access denied* Press any key to continue.

Installation system boot error from CD:

< Span style= "Color:rgb (51, 51, 51); > a black screen appears with a prompt box Image failed to Verify with *access denied*
Press any key to continue

reason : Samsung laptop has downgrade protection to the system, in the conversion of Win8 to Win7 is, need to set the BIOS.

1. Press F2 to enter BIOS, locate boot-->secure boot--> instead: Disabled---->os Mode selection to: CSM OS.

2. Change the Advanced-->fast BIOS mode to disable.

3. Save the exit.

System booting Boot sequence modification:

Press F2 to enter the BIOS and set the boot order in boot--> boot Device priorty. Modify the order by F5 and F6. ---> Save exit.