इक्स्क्लुसिव ह्प शोरूम

I am having a hp pavilion dv6 laptop, black patches have appeared on my laptop screen, i think the display is gone. how much will it cost to replace the same and also my dvd reader couldn't read the cd's as well as the laptop camera is not working, also i am not able to download anything from wifi but download could be done using data card. how much and how long will it take to repair these.
While repairing, will the data stored in my laptop get lost? If so can you take backup of those and feed them back once repaired?

my mail id is josephin.alex92@gmail.com

Please do reply.
Thanks and Regards