I have this Notebook for like 5 months(no warranty anymore) and never had a problem but oneday when I woke up, I turned it on. Blackscreen nothing. i can press on the ESC button while booting and get to the bios but thats everything i can do. Tried booting it with a usb but no success I also use a Sandisk 250GB Super Ultra. Need help pls!

System information:
Intel i-7 4800
Nvidia GTX 770M
8GB Ram
1 TB HDD