I have this 6th Gen MB Gigabyte GA-H110M-S2H mobo and am trying to install Windows 7. As you are no doubt aware there are no USB drivers in W7 to allow it to work with this board but Gigabyte has this Windows image tool which allows you to have the correct drivers and an ISO image of the Windows 7 installation disc on a flash drive and install from it. I start the process but after 1.5 hrs I get this "Failed to add drivers to an offline Windows image" message. I have tried numerous times but have had no success.
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If the Gigabyte tool does not work, then use the ASUS EZ Installer.
You don't need a PC with a DVD drive to create the USB flash drive, when you use the ASUS EZ Installer.
How to mount a Windows 7 ISO image file to the virtual CD/DVD drive in Windows 7.
(You don't need this program if you have Windows 8/10)
WinCDEmu - the easiest way to mount an ISO. And more...
WinCDEmu - How to Mount ISO Files
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Download the ASUS EZ Installer (click on the Utilities option).
ASUS
How to use the ASUS EZ Installer.
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You do not need to change the boot order of drives in your UEFI BIOS settings. If you have changed the settings, then restore the default settings.
- Connect your Windows 7 USB flash drive.
- Restart the computer.
- Press the correct key (Asus F8, Gigabyte F12) to enter the boot menu.
- Select to boot from the Windows 7 USB flash drive.
edit:
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For example, the Gigabyte GA-H110M-S2H motherboard.
Restore the Gigabyte UEFI BIOS to default settings (Load Optimized Defaults). After that, check the following setting (marked with red color) in the Gigabyte UEFI BIOS, if you want to install Windows 7.
Windows 8/10 Features
Allows you to select the operating system to be installed.
-
Other OS (Default)
- Windows 8/10
- Windows 8/10 WHQL
CSM Support
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
- Enabled - Enables UEFI CSM. (Default)
- Disabled - Disables UEFI CSM and supports UEFI BIOS boot process only.
This item is configurable only when
Windows 8/10 Features is set to
Windows 8/10 or
Windows 8/10 WHQL.
LAN PXE Boot Option ROM
Allows you to select whether to enable the legacy option ROM for the LAN controller. (Default: Disabled)
This item is configurable only when
CSM Support is set to
Enabled.
Storage Boot Option Control
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
- Disabled - Disables option ROM.
- UEFI Only - Enables UEFI option ROM only.
- Legacy Only - Enables legacy option ROM only. (Default)
This item is configurable only when
CSM Support is set to
Enabled.
Other PCI Device ROM Priority
Allows you to select whether to enable the UEFI or Legacy option ROM for the PCI device controller other than the LAN, storage device, and graphics controllers.
- Disabled - Disables option ROM.
- UEFI Only - Enables UEFI option ROM only. (Default)
- Legacy Only - Enables legacy option ROM only.
This item is configurable only when
CSM Support is set to
Enabled.
Network Stack
Disables or enables booting from the network to install a GPT format OS, such as installing the OS from the Windows Deployment Services server. (Default: Disabled)
Secure Boot
Enables or disables Secure Boot function.
- Enabled - Enables Secure Boot.
- Disabled - Disables Secure Boot.
This item is configurable only when
Windows 8/10 Features is set to
Windows 8/10 or
Windows 8/10 WHQL.
Secure Boot Mode
Define the Secure Boot mode.
- Standard
- Custom
This item is configurable only when
Windows 8/10 Features is set to
Windows 8/10 or
Windows 8/10 WHQL.