Vista - Can't see checked or unchecked values

I have Vista. I had IE7 before and today I downloaded IE8. But the problem stil presists. The problem is - I can't see anything on checkboxes in IE on any site. All the checkboxes are displayed in white. I don't know way. Please see the attachment for visual presentation. Can some one help me on this one ?

An update to the above post: I just happened to go one site, there I can't even see the buttons available on top. But as I move my cursor, I could realize that there is a button. It means the buttons are enabled and can be recognized by the cursor. I just can't see it... What is that property that is hiding those buttons. Since I changed IE from 7 to 8 it should not be due to IE. Are there any settings that I need to change in Vista ? Need some help from the experts.

Any help on this ?

"cpr" <guest@xxxxxx-email.com> wrote in message news:f567addf8cff1d7080839105981b73a1@xxxxxx-gateway.com...Looking at your sample page I'm wondering could it be a missing font ?
What's the url of that web site in your picture?

I don't know missing font or not ? But that is the following yahoo mail link
http://us.mg1.mail.yahoo.com/dc/laun...=55bnjbp6mdggv
but this behaviour happens in all the URL's.