MacBook won't boot past blue screen
I was working on my MacBook tonight I've had it since it was newly bought in 2007 and haven't had a single problem till today all a sudden I noticed under my iTunes all music it said I had 200+ songs, I immediately was concerned because I have well over 3,000 songs, the computer is plugged into the wall charger though it says not charging. I take the charge cord away the whole machine dies instantly, now I tried to turn it on and all I get is the blue screen of death. It will be bright blue and I can move my cursor but then the screen will dull the cursor will go away and then a little progress wheel will appear then it goes away and the screen brightens again the cursor appears... Etc it has been going through this cycle for the past hour, I've tried restarting with install disk and holding c I go through the hoops restart same scene. I tried holding d down to see if magically something torched my computer while I blinked and after an hour of the extensive analysis nothing is wrong! I don't know what else to do! Please help! I have snow leopard running on the machine!
Macbook, iOS 4