Black Screen no Bios

[Sabotag]

Hello everyone.
I have upgraded my Alienware 17xR3 GPU from 6990M to GTX880M.
I have followed instructions online regarding updating the bios to the unlocked version, then disabling the Intel graphics and set the primary display to PEG. I have then installed the GTX880M but have gone into a BSoD on windows 7 login. Then i've made a horrible mistake (or at least that's what it seems to be) entering bios and for some stupid reason enabled the Intel graphics and now my Alienware won't show any image, no beeps, no bios, just a black scary screen.

I hope there are some sharks out there that might be able to help.
Any feedback will be appreciated.

 

[Sabotag]

Update even though no one posted, i might help some other poor soul.
So basically, enabling the IGD while the Nvidia card is installed, is not allowed (will result in the spoken black screen with no bios access). I switched back to the old GPU but it remained black, i then tried to turn the computer on with no GPU at all, but it just kept beeping. I then placed back my old GPU and it worked, i can only assume that i have misplaced it on my previous attempt.
I was never able to get my windows 7 to work with my new Nvidia (even though i have disabled the audio in the bios and used a DDU tool in safe mode), so i did a fresh Windows 7 installation. The Nvidia driver installer that i have downloaded from the official website was unable to recognize my card, so i have followed these instructions: https/www.youtube.com/watch?v=HKwFHU8ka5I and i was able to install the drivers. I then met a new issue that occurred once enabling back my IDT in the bios, my computer started freezing leaving me with a blueish screen (not the BSoD, just light blue and frozen). Then have i learned, that on a fresh windows installation with a new Nvidia card, one should actually already enable the IDT and install its drivers before to the Nvidia drivers, something that i haven't tried yet.
Off i go to play around with this solution, hope that's about it.