Ok well today, I tried to do a system restore but somehow, it won't let me do that.
All that shows up is a white box, and a little white box at the top left of it that usually shows up when something freezes. Here:


And that happens when i click the icon on the start menu. (You know, when you click start on the bottom left of the screen)

And when i try to click on all programs--> accessories-->System Tools-->System Restore, nothing shows up.

I have windows XP, and i'm using avast free. If it is a virus, then i don't know why it didn't pick it up when i did a system scan.

Can anyone help me please?
Thanks