Removing windows genuine advantage
I writing this guide after experience of lot computers so you can trust...
if you using windows xp like me (I hate vista it's lamer edition)
and you did updates and oops...
you get this screen:
if your windows still working
run it and reboot your computer,
working 100% 
if your windows already crashed do the following:
1. go to setup BIOS (del,F1) and configure BOOT FROM CD...
2. insert windows xp installation disc
3. after that press any key till the installation will begin
wait till you get to this screen:
4. press R to enter to "Recovery Console"
5.after that wait and don't press anything till you will see this screen
6.now press 1 and ENTER
7.now you will prompted for password, you can press ENTER without entering nothing.
unless you have a password (for admin user).
ok now you will get:
C:\WINDOWS
8.now enter this command :"FIXMBR"
after that press Y
9 .now enter this command FIXBOOT
after that press Y
10.now enter EXIT and your comuter will rebooting
11. return to setup BIOS (del,F1) and configure BOOT FROM HARD DISk...
12.now try to start windows if it's work download and run this
CRACK
it will remove the massage of windows genuine advantage
if you get blue screen during entering to user account:
1.press F8 choose safe mode and do system restore
to few days before the crash and after that enter normally to windows
and download and run this
CRACK
checked on a lot of computers I'ts my personal solution.
How to avoiding this situation and keep update?
Go to CONTROL PANEL > automated updates
and configure like that:
when you prompted for updates choose custom install
and if WGA (windows genuine advantage) apeears
just clear the check box
and do all the updates
