MBPr keeps crash, black screen, esp in bootcamp
I have used my MBPr 15" for 2 years. There is a new problem troubling me recently. The computer crash without warning occasionally and when it reboot, it is often crash again immediately when you log in. You need to restart it several times, and sometimes, you need to wait to tomorrow. Then it can be restart normally. Sometimes, you can log in, but without display. There is still no display when you output the screen to another monitor. But you can hear the sound of MAC OS to prove the system is still working.
I have tried to reboot from another MAC OS in external hard drive. There is the same condition.
I then bootcamp the SSD, and install a win7 inside. And the windows crash every time I log in. Then I log in safe mode, and disable the display card driver, there is no more crash.
Because it does not always happen in MAC OS system. I also force the system to use Nvidia graphic card all the time, but it doesn't always crash...
So, please help me to find out the problem. Thank you very much .