why wont my mac start up?

[Carl]

i have had my macbook pro for about 2 years, and i recently had an incident with it. as i got out of bed i dropped my mac book on the floor, it landed directly on he bottom by the mouse, it instantly froze up on impact, i panic t and because the mouse wouldn't move or anything i was forced to shut it down by holding down the power button, when i turned it back on after a while thew apple logo came up but then turned into this grey circle with a line, image attached because i can explain what it looks like this http://www.etftrends.com/wp-content/uplo...2.svg_.png

[Bob]

Here is all the mac and apple help in one place... Hello, Ask Apple here for free 1-800-MY-Apple ,and check out the sites for more informaton http://www.apple.com/support/ and
https://discussions.apple.com/thread/246...0&tstart=0
http://www.facebook.com/pages/TheAppleGossip/...
http://www.apple.com/macosx/recovery/
http://9to5mac.com/
http://appleid.apple.com
http://www.apple.com/support/mac/facetime/
http://www.ifixit.com/iPad-Parts and Mac parts
http://www.apple.com/iphone/built-in-app...phone.html
Hey, I enjoyed your question, I have worked as a technician most of my life, I
hope I have helped you...
Good luck...

CompTIA A+ Certified Computer Professional