Provide the hardware IDs of the PCI Simple Communication Controller. See Windows Reinstallation Guide/A Clean Install of Windows 7 Step 12 for details:

http://philipyip.wordpress.com/dell-community-forums/

Hi realkamy,

I suspect the chipset driver is not installed. You need to install the Dell system software and the chipset driver. Find the link below for the following drivers:

Dell System software: http://dell.to/18DXUKs

Chipset driver: http://dell.to/10C5q22

Restart the system after each installation.

Let me know if you need further assistance.

DELL-Sujatha K

Already install the chipset and dell system software..So what is the next step?

The exclamation mark still there..

Hi realkamy,

As suggested by Philip, I request you to provide the hardware ID of the PCI Simple Communication Controller. Right click the device with the error and select properties:
Go to details and select Hardware ids.

Awaiting your response.

Thank for all your response...problem solved

regards