DxDiag report:
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130318-1533)
Language: Polish (Regional Setting: Polish)
System Manufacturer: System manufacturer
System Model: System Product Name
BIOS: BIOS Date: 12/14/10 15:06:22 Ver: 08.00.15
Processor: IntelĀ® Core i5 CPU 760 @ 2.80GHz (4 CPUs), ~2.8GHz
Memory: 4096MB RAM
Available OS Memory: 4094MB RAM
Page File: 2560MB used, 5623MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode
Media Player ver.: 12.07.0.7601.17514
I haven't installed any additional codecs. Although I'm using KMP player for videos (http://www.kmpmedia.net/), which may have done so in the installation process.
I think I have the whole list in the dx diag, If you like.