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To Restore BIOS Settings to Factory Default (ML Motherboard)

If the motherboard battery should fail, the BIOS settings which are stored in CMOS memory will have to be reset to insure proper operation. (BIOS is acronym for Basic In/Out Settings, and CMOS is acronym for Complementary Metal Oxide Semiconductor memory)

OmniTurn G4 CNC

If you are familiar with BIOS setting, the instructions are as follows:

  1. Power up or reboot the CNC, then press Del key to enter CMOS menu.
  2. Select Optimized Default Settings, then press Enter to apply.
  3. Select Advanced BIOS Settings, and set the following:
    • 1st Boot Device: USB-HDD
    • 2nd Boot Device: HDD-0
    • 3d Boot Device: USB-FDD
    • Bootup Numlock Status: Off
    • Typematic rate: 6
    • Typematic delay: 1000
  4. Select Integrated Perpherals, and DISABLE Onboard LAN Boot ROM.
  5. Verify that VIA OnChip LAN is ENABLED.
  6. Save and exit CMOS

If you NOT are familiar with BIOS setting, screen shots and explanations follow:


Epia ML motherboard BIOS screens: Restore settings to factory default:


Epia ML Motherboard BIOS Main Screen: Load Optimized Defaults
BIOS Main Screen:
Power up or reboot the CNC, then press Del key to enter CMOS menu.

Use arrow keys to highlight "Load Optimized Defaults", then press Enter, then press "Y", then press Enter again.


Epia ML Motherboard BIOS Main Screen: Advanced BIOS Settings
BIOS Main Screen:
Use down arrow to highlight "Advanced BIOS", then press Enter. Advanced BIOS Features screen should appear.


Epia ML Motherboard BIOS: Advanced BIOS Features
Advanced BIOS Features:
Use arrow keys to highlight each of the following six items. Use the "+" or "-" keys (or Page Up or Page Down keys) to change each value to match the list. Then press Esc key to return to Main Menu.
  • 1st Boot Device: USB-HDD
  • 2nd Boot Device: HDD-0
  • 3d Boot Device: USB-FDD
  • Bootup Numlock Status: Off
  • Typematic rate: 6
  • Typematic delay: 1000


Epia ML Motherboarde BIOS Main Scree: Integrated Peripherals
BIOS Main Screen:
Use arrow keys to highlight "Integrated Peripherals", then press Enter. Integrated Peripherals screen should appear.


Epia ML Motherboarde BIOS Integrated Peripherals
Integrated Peripherals screen:
Use arrow keys to highlight "Onboard LAN Boot ROM. Use the "+" or "-" keys (or Page Up or Page Down keys) to set it to Disabled.

Verify "VIA OnChip LAN is Enabled.

Press Esc to return to Main Menu.


Epia ML Motherboarde BIOS Save and Exit
BIOS Main Screen:
Press F10 to save and exit, then press Enter. CNC will reboot with the factory default settings.
BIOS Main Screen:
Power up or reboot the CNC, then press Del key to enter CMOS menu.

Use arrow keys to highlight "Load Optimized Defaults", then press Enter, then press "Y", then press Enter again.
Epia ML Motherboard BIOS Main Screen: Load Optimized Defaults

BIOS Main Screen:
Use down arrow to highlight "Advanced BIOS", then press Enter. Advanced BIOS Features screen should appear.
Epia ML Motherboard BIOS Main Screen: Advanced BIOS Settings

Advanced BIOS Features:
Use arrow keys to highlight each of the following six items. Use the "+" or "-" keys (or Page Up or Page Down keys) to change each value to match the list. Then press Esc key to return to Main Menu.
Epia ML Motherboard BIOS: Advanced BIOS Features

BIOS Main Screen:
Use arrow keys to highlight "Integrated Peripherals", then press Enter. Integrated Peripherals screen should appear.
Epia ML Motherboarde BIOS Main Scree: Integrated Peripherals

Integrated Peripherals screen:
Use arrow keys to highlight "Onboard LAN Boot ROM. Use the "+" or "-" keys (or Page Up or Page Down keys) to set it to Disabled.

Verify "VIA OnChip LAN is Enabled.

Press Esc to return to Main Menu.
Epia ML Motherboard BIOS Integrated Peripherals

BIOS Main Screen:
Press F10 to save and exit, then press Enter. CNC will reboot with the factory default settings.
Epia ML Motherboarde BIOS Save and Exit

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