hi im a beginner in windows 7 just upgraded from windows vista.my problem started yesterday, when windows at startup it just goes black but i can see the cursor. it freeze there for so long that i have to restart again, even in safe mode is all black with the cursor. this what i have done before that, updated some windows updates. then it begun doing the black screen. any ideas anyone? can someone pls move this post? i think i posted in the wrong section.thank you.