Hi, thank you for these details.
I wanna update this by saying that i've just reinstalled windows 7 by formating the hard drive too.
installed all the necessary drivers (graphic etc...) and I was surprised to see this freaking BSOD again woww !!
Can anyone please help me to determine what causes this bsod? I am really lost.
the bug check code is again, 0x0000003b and the string is SYSYEM_SERVICE_EXCEPTION. Caused by win32k.sys. File description: Multi-User Win32 Driver.