Windows 10: HELP! No BIOS at bootup, PC only shows mobile display

Update: I managed to Clear the CMOS using the CLR CMOS button on the back of my PC. I'd posted the same question here, as well as the ASUS ROG forum. I'm still missing the POST beep, but at least the UEFI appears, and my GPU is recognized, thus I get the desired resolution. I don't think I did the CMOS clearing correctly, otherwise I might have the POST beep back, so I'm still researching that part. I did reset my UEFI to default settings, which did not bring the beep back.

 

The same thing is happening to me. All of the components have been tested to be good. These types of things never happened prior to Windows 10, and I see it happening to a lot of other people with 10. The key is to get into the bios and use the suggested defaults. You can then add certain things, such as the XMP profile (if your motherboard comes with this option. Using one memory stick, try switching the RAM to each of the four slots. I do not know why, and it makes no sense to me, but it got my system going twice.

 

I would think that with a 27" monitor and a GTX 980 you should be at a higher rate than 60Hz.

 

I got the monitor way before the GPU.