PC Not Booting Up Properly

Icaraeus

Honorable
Up until now whenever my PC turned on it went through the manufacturer screen with BIOS, setup, boot options underneath before coming up with the Windows 8 boot-up sequence. However, now when I turn it on the screen is blank but it comes up after Windows 8 fully boots. Last night I opened up my PC to rearrange the cabling to make it cleaner just because I wanted to. However when I started up the computer the screen was blank and only turned on after Windows supposedly fully booted. I tried mashing F10 during boot-up but it doesn't seem to recognise I tried to enter the BIOS.

I haven't removed any plugged-in cables from my computer but I did switch around the connector cables for my SSD and HDD so they looked clean inside. Could this be the problem? Would I only need to switch them around again?

Here's an image of my PC:

http://i.imgur.com/k4RqhN1.jpg

Before I switched around the cabling:

http://i.imgur.com/t2WZqFS.jpg