Windows 7 black screen after login

So, here is the problem. When I start up the windows it boots like it should and when I enter the password of the user, the screen goes black and it freezes. No pointer, cant access task manager etc. The only way to solve this is to restart the PC and it will boot without any problems. I installed windows 8 x64, the same problem. Installed windows 7 32bit the same problem and 64 bit the same problem. I installed the latest drivers available for this computer. I searched on google and some people were saying that it is display driver problem. I downloaded 4 different driver versions , still the same thing. I havent updated the BIOS because I am scared of getting a dead motherboard. I also started sfc scannow but it says Windows Resource Protection did not find any integrity violations. Please help me to solve this problem is too annoying.

The PC:
Intel i5 2500 3.4 GHz
nVidia GeForce GTS 450
6GB RAM
Foxconn P67A-S

Thank you for the reply. On idle the CPU is 40C, the GPU is 35C, the motherboard is 33C, the HDD is 31C (c= Celsius}

Here is a screenshot from the temperature and voltages

As described above, I done all of those things. I did system restore but this problem occurs after every fresh installed OS. The registry is OK. I installed many drivers and updated to the most recent version but still the same thing

Thank you. I am waiting desperately

Well on the sticker is only the voltage. 230V. Nothing more than that