MY newly installed graphics card, the Gigabyte GTX 560 Ti OC crash each single moment I boot to Windows 7 x64. While crash, the Windows Displays error message regarding Nvidia drivers and somewhat concerning Kernel, display turns black a small number of times and computer simply auto reboots. Following reboot it works like per usual. While rebooting or restarting the computer there is no problem but while I shut down and re-start issue persist. I have tried both drivers, the one that came with the CD and most up-to-date Nvidia 266.66, but similar issue. With Windows default driver it works fine. I still couldn’t able to recognize what is the problem.