Blender: problem with screen!

When i open blender all ok, except weird window on blender screen.
Pic:




I really don’t know why is so.

What could be a problem, if someone send same post, please give me url to it!

PC:
System:
Windows XP
Professional Version 2002
Service pack 3
Computer:
CPU 2.93GHz
1 GB ram
NVIDIA GeForce 7300 GS

Blender 249.2

If you need more information ask.

Make sure you have the latest graphics card driver. Don’t just do an automatic search, look on the suppliers website.