Hey there guys,

My 2011 Macbook Pro has encountered some problems. Firstly while i was at school, i opened up my computer, usually the computer would require you to type your password, but my login page became fuzzy, white lines everywhere. So I restarted my computer and everything was okay. After that i came back home, my computer was running fine, after surfing the net for a few hours, my whole computer suddenly became blue. So what i did was i just restarted my computer, after that my computer would boot up Apple logo would come up, the spinning wheel would also come up, after 30-40 secs it would turn black screen and come back on as a white screen and would just stay like that. It would be on the white screen. Tried some rebooting ways but all didn't work.

1st: I wanna know whats the problem?

2nd: Is this a harddrive failure? (Because i have alot of important documents and personal stuff in my hard drive and i hope it isn't a crashed hardrive)

Thanks for your help..

PS: Im running on Moutain Lion, but i have no idea what version it is.