From your description it's not clear what the problem is. After you see that "streaking line" and the black background screen, do you reach the logon screen - or - is your PC hanging ? If so, restart in Safe Mode. Can you reach the desktop there ?

BTW, by "hotfix 2" do you mean SP2 (service pack 2) ? Anyway, what you see in the first screen on boot is called BIOS POST and that's independent of the installed operating system


Good Luck,

Cetin


Trying to unweave, unwind, unravel
And piece together the past and the future,


T. S. Eliot