Hello friends, In my job PC has like that trouble: When i start it and desktop appears normally but after a few minutes it get into green screen with something like that title: collecting a data.... Dumping a physical memory and counting a numbers.... after it restarts when it turns on again same trouble occurs. pops up unaccepted shut down has occurred. what is that? please help me. there is installed windows 7. it has 4 GB RAM, it is 2 dual core. thanks in advanced.