Blue Screen in Windows log off mode

When I log out and come back, I see that my PC restarts, I get a notification of minidump. It happens after I have logged off (Windows + L button) and maybe (in the future I'm afraid) when I'm working with PC, but has not yet done (blue screen). I do not even know why this problem, a hardware or a software? I followed the steps of this site and made a zip. file of minidump. I hope you can help me with this. Look here below for zip.file. Thank you.

I thought my problem was solved after a driver update, but I was wrong. The pc is booting again automatically at Windows log off mode. During busy (gaming, surfing etc.) I get the problem minidump not, but only by windows log off mode. I've made a new zip file which includes the minidump files and I hope someone can help me to solve this problem. Thanks!

try running fur mark to insure that your GPU isn't over heating or doesnt have some sort of hardware problem:

FurMark: Graphics Card Stability and Stress Test, OpenGL Benchmark and GPU Temperature | oZone3D.Net

FurMark Setup:
- If you have more than one GPU, select Multi-GPU during setup
- In the Run mode box, select "Stability Test" and "Log GPU Temperature" (BurnIn test in newer versions).
Click "Go" to start the test
- Run the test until the GPU temperature maxes out - or until you start having problems (whichever comes first).
- Click "Quit" to exit

Click to expand...

Dsprague said:

try running fur mark to insure that your GPU isn't over heating or doesnt have some sort of hardware problem:

FurMark: Graphics Card Stability and Stress Test, OpenGL Benchmark and GPU Temperature | oZone3D.Net

FurMark Setup:
- If you have more than one GPU, select Multi-GPU during setup
- In the Run mode box, select "Stability Test" and "Log GPU Temperature" (BurnIn test in newer versions).
Click "Go" to start the test
- Run the test until the GPU temperature maxes out - or until you start having problems (whichever comes first).
- Click "Quit" to exit

Click to expand...

Click to expand...

Ok, I wil try, I let you know, thanks

I did the test with FurMark, it's not the video card I think. See the picture I show here. View attachment 16164 Max. GPU. Temp. is normal I think?? I tried the Burn it test on FurMark too, same results.

I look forward to the results.

This time not only by Windows log off mode, but also when I'm working on Windows the pc restarts again from hisself.

Can you post the new dump files please?

Look below for the new minidump files. Thanks for you're help!

Out of curiosity whats the wattage on your PSU?

800 watt power supply.

I've got a few minutes ago a blue screen again Is it maybe the power supply that's too low (800 Watt)? Thanks!

It shouldn't be although the PSU may be failing do you have another PSU that you can test with?

No, I don't have another PSU

Is this a new PC?

Yes, not even 1 year I think, a few months.

Hmm were you using windows 8 from the beginning or there was some other OS put?
Like windows 7?

Yes, that's right, I bought windows 8 a few months later. But I've installed all drivers for windows 8, like for motherboard driver, videocard driver. Now it's working good for a few days, there's no minidump or else. I don't know really what the problem is, but I will see. Thanks for you're help again.