Biostar

Yes, Gaming Z97X will support i7-4790K CPU with it's full function.

Due to specification limitation, VN7303THX1 VGA card will only support 2 display at same time.

There is no problem for G31D-M7 to use Intel E7000 series CPU to install Windows 10 Pro 32 or 64 bit OS.

First, to use Touch OC, it will need to install Touch OC utility from our driver CD. After boot to OS, run the Touch OC utility, then go to Power Management setting to set to High Performance for the system. Touch OC panel should work properly.

If you are using version 7.x or version 8.x motherboard, it will not support 5V standby power for USB ports. So system will not be able to charge the mobile phone.

Yes, PCI-E 16x slot will be able to use 1x card.

Due to Windows 7 does not have proper USB driver for N3150 (Braswell) chipset, it will unable to use USB memory drive (USB storage) to install Windows 7 OS.

Please check product specification page > OS support.