I have a problem regarding the SLI setting. Sometime when i change the SLI setup, the OS cannot be loaded.

And one more thing, i also face PC freezed and i have to restart the PC after that. This happen when i sue Nvidia Dirver 93.71 and above. Im am confuse why is it happen because on the old driver, such thing as tecture problem error and else did not occur.

already at stable stage now after installing previous 93.31 nvidia driver. But it is a bit slower in term of performance.

Well...do you ever done a scan disk?
It should be try and error here and there. There are amny things that might cause BSOD. But both either because of Hardware or Software issue,

there are some possible reason why PC restart or BSOD.

1. RAM setting either:
i. The timing not fully supported
ii. its frequency
--> refer to manuafacturrer recommendation setting for ur mobo

2. Other hardware error.
i. Mobo driver clash
ii. Or some hardware cannot run simultaneously with certain hardware.
-->check and uninstall the hardware

3. OS file corrupt due to improper shutdown---> do scan disk and next boot

Restart problem:
If it able to boot up to windows after restart, it might caused of software issue.

minidump will be useful so that people will able to help you out.

As mentioned, there are several causes that lead to the problem.

For AMD = CPU could cut off if reach 75C. But default, it is still OK it is run below 55C.

As for Intel, i heard the that the temp for cut off will be around 60C. Try to keep lower than 50C for Intel.

to check memory compatibility and stability, try to >>>orthos.

Try to check previous applications installed as well. If possible, remove the application which cause you the trouble if you found that you faced the problem after you installed the application.

Just my a little suggestion though. Peace.