ok, I got the error:
*** STOP: 0x00000076 (0x00000000,0x8312EBAO,0x0000003E,0x00000000) PROCESS_HAS_LOCKED_PAGES
Beginning dump of physical memory
Physical memory dump complete. Contact your system administrator or technical support group
PS: I must mention that before it happened one of my programs stopped responding, and when I tryed to end the task or kill the process, it said, that it's possible cause the program is being debugged. It stayed like that for a while and then I got the error...