Window10 to Windows7
1. Convert win10 hard disk format to mbr format
two。 Set up the flash drive to start, (the system has been downloaded and placed in the flash drive)
The system cannot boot from a flash drive
Enter the boos interface and modify three parameters
Security- > Secure Boot- > change Enabled to Disabled security mode
Startup- > Network Boot settings are started from USB flash drive
Startup- > Network Boot UEFI/Legacy Boot-> change UEFI Only to Bother or Legacy Only
