We build few computer for a shop and we got this issues
When we match a dg43gt with a Samsung screen with camera , the bios just freeze in the bios logon when we plug the usb cable
We got the same issue for the dg45id, Before we use dg35ec ...but now..the are discontinued.. We search for another motherboard
The client must have a samsung screen w\ Camera
I guess thsi inbuilt camera is a UVC (driver needless) camera... Some UVC camera will cause POST delay because BIOS can not recognise it. Please upgrade BIOS to latest one first, if can not solve it, the easiet way is to change another LCD or camera, another option is send this specific LCD monitor to Intel for final solution--BIOS fix.