Are a HDD failure and a blue tinted screen linked (along with multiple other issues)?

HDD problems are hard to deal with because their are alot of things that can go wrong with them. When you said that the BIOS wasn't picking up your HDD on boot up i immediately though of a bad motherboard. However because i don't have the computer sitting in front of me their is only so much i can say. Bring it in to your local computer repair shop and ask them to do diagnosis on it. They'll look at the problem, then get back to you with it. I'm saying its a bad motherboard but that's only a guess. If you've invested alot of time and money into this computer check it out. diagnosis usually cost around 40-50 bucks, and depending on what it is (a hardware problem or something with the BIOS) you'll go from their