Well, It happens only I try to do Vista windows update.
The update get stuck after 47 updates from 5x updates.
What I was encountering is a text prompt came up saying something about cleaning memory and afterwards,
Every time the windows got to its final stages it said something like 'I am closing the bowser and trying to find a solution with windows'. then I got a black screen probably because it was tring to do something.
I have waited for 10-15 min. and nothing happened.
I tried configuring the BIOS to 1600ghz for the RAM and it didn't help.