crwdns2934241:0crwdne2934241:0 Giljard

crwdns2934249:0crwdne2934249:0:

I am have macbook pro 15 2011 i7

Suddenly my macbook pro goes to black screen i was using bootcamp windows 7

Now when i turn on it start but it is on black screen and the keyboard not working and apple logo not flashing.can you tell me some advice please.it happen to me 2 month ago than i resset pram than turn on but now i dont know what to do.please help.

crwdns2915684:0crwdne2915684:0:

open