Lol!
Men,i did all th stages u've mentioned in vain..i evn took it to these local experts(i was then in Dodoma) but nothng was done. I thought meib th prob was HD or RAM (i replaced) but the prob. persists.
Then,i had no other option thn packng my Toshiba Satellite M65 and checkng out with another PC..(wanna buy it?)
Now i'm wth LENOVO (ThinkVantage) T500..
Wow..Its awesome!