Boot cycle on D3H after enabling iGPU

[ABD EL HAMEED]

So this my first custom build so I decided to buy a new monitor with it and so I did so that leaves me with an old monitor which I wanted to use with Intel HD 4000 so I set the iGPU option in the BIOS of my Gigabyte z77X-D3H and connected the monitor via VGA cable and every time I set the iGPU option to enabled it simply keeps rebooting after the BIOS screen so I had an Ubuntu Live CD and it booted from the CD perfectly with the 2 monitors working fine so why won't it boot to windows and thanks in advance