why my pc not run sl?

i have a great pc with all requeriments and more....but sl not run in my pc...i try it all but not run.....i have a problem with my pc or software or preferences...i dont know.... but i need help please,,,,thanks for all....

This does not give enough information for anyone to help you. Please try to post specific information about your PC and your internet connection.

You can find out your system information (if you are a Windows user) by selecting "Run" from the Windows start menu, then typing "dxdiag.exe" in the box and clicking OK.

You can find your internet speed by going to http://www.speedtest.net/ and click "StartTest" at the top of the map.

Example:
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Internet: High speed cable
Download: 10.21 Mb/s
Upload: 2.67 Mb/s
Ping: 21 ms
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System Information
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Operating System: Windows XP Professional, Service Pack 3
System Manufacturer: HP Pavilion 061
System Model: EW100AA-ABA A1487C
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Pentium(R) D CPU 3.00GHz (2 CPUs)
Memory: 3582MB RAM
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Display Devices
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Card name: NVIDIA GeForce 7300 LE
Display Memory: 256.0 MB
Current Mode: 1280 x 1024 (32 bit) (60Hz)
Driver Version: 6.14.0011.7519 (English)
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