I was installing 2 new components to my pc today - 1 SSD and 1 HDD - the pc worked fine before that and I know for sure both of the new components do so too because the PC already ran fine and I even installed Windows on the SSD, all of the drivers etc. Now, my PC was recognizing the new HDD, but it wasnt utilizing it so naturally, I headed out to the Bios. This is where I messed up bigtime... I selected the third boot option as the HDD and I turned on fast boot. That was the ok part (I think...), I then also wanted to change my default on boot display because the booting menu always appeared on my second monitor, so I changed it to ITGFX (or something along those lines) because I thought that meant that Integrated Graphics, i.e. my main monitor. I saved the settings and then rebooted. This is where I knew I messed up... my PC started fine, I even heard the Windows start up sound, but none of my monitors were displaying anything. So I basically cannot access my PC and I'm terribly afraid that I've just lost my PC. 
Does anybody please have a solution?
Is there a way to revert the settings or better yet, get my monitors to display my PC?

Does anybody please have a solution?
Is there a way to revert the settings or better yet, get my monitors to display my PC?