My mbp is getting stuck on white screen while booting up . I have tried repairing it through Internet recovery mode but still it doesn't boot up . Also, I am not able to access Disk Utilities using Cmd + R , neither it is booting up in safe mode. I have tried repairing it in single user mode but didn't help . I did fsck check and got " the macintosh HD appears to be Ok". Further when I tried to reboot it,it again got stuck on white screen. I have tried resetting the PRAM but that also didn't help me . I took it to the apple service centre , they have put this model in vintage and don't provide any services . I have also tried to boot it through recovery partition but that also got stuck on white screen . Kindly help ?