How to fix Boot Devices Not Found within 1 minutes

When the Computer displays Boot Devices Not Found:
Step 1: Press F10 on the keyboard
Step 2: Press the right arrow key until System Configuration
Step 3: Press the down arrow key until Boot Options and press Enter
Step 4: Select Legacy Support and enabled then press Enter
Step 5: Press F10 and select YES then press Enter
Step 6: Press the given numbers and Enter
Problem fixed!!!!!!!?