Kernal-Power error 41 while playing games

The kernel power event you are getting simply means that the computer restarted unexpectedly. That's all it means.

However, if what you told me is true, the power strip will only allow 275W of power to pass through and you have a 750Watt power supply, the power supply was limited to being able to supply only 275 Watts of power, which is not enough to run your components. At full draw, your Graphics card can use around 350 W of power. So, the power strip was not capable of powering your computer. At this point, that is what I think. So, plug your computer into the wall and see if that is correct. It may be something else, but that is what I think right now. So, lets give it a try and see. If I am wrong, we'll have to look somewhere else for the cause.

First, make sure your computer is configured to create Small Memory dumps.
Dump Files - Configure Windows to Create on BSOD
If it isn't the power, we may be able to make the computer BSOD by creating stress on the drivers and causing the driver causing your problem to cause a BSOD and catching it with a Dump file. But first I want to test the power theory and check some more hardware.

I don't know that is the problem, but it can be. It's worth a try. Just let me know when you have had time to work with it.