One of the Problem that PC users ever face is when they formatted their PC is loading drivers,One of the finest features that Windows XP ever has is the inbuilt Standard VGA drivers even though if you have not installed Graphic drivers you can continue with Windows XP which is a must in case of other operating systems to load VGA drivers .But it is always recommended to install all drivers that came with your motherboard Cd.
If you don’t install VGA drivers in windows XP the problem that will arise is Stand By Button is Greyed out in the Turnoff Computer window.Take a look how to solve this problem.
Before Installing VGA drivers
Solution:Install Display drivers that came with motherboard cd and Stand By button will comes to normal.
After installing display Drivers