nillinu

It turns on and i can hear the drive spinning.
I tried putting the old one back in. Yes i am using the casing...
I did take all the screws on the back off first because i was going to clean out the inside fans..
...but i did not open it i just put the screws back in.. yes all the screws are in
Could someone help me... right now i am without my macbook and am freaking out...
... i also tried using the mini dvi to svideo and did not get a picture on the television. HELP!