Whole desktop is full of errors

Hi,
I am using Windows XP on my Intel motherboard.
A week ago it was working fine and I faced no issue.
But just two days ago when I turned it on it showed a lot of error messages after log on.
My whole screen is full of these errors.
I am using a good antivirus. I can’t understand the reasons for this error.
Please suggest a solution as I don’t want to reinstall windows.

