Notebook System Software Installation Error

Hello,
I have just upgraded my Dell XPS M1530 laptop from Windows Vista to Windows 7.
For some time after the upgrade everything was okay and my USB mouse functioned accurately for 24 hours or so and later on I inserted in a memory card and all of a sudden the USB ports went unsupported.
It shows that the ports are ‘disable’ and Windows was unable to identify or recognize any usb port.
Out-of-date drivers may be one of the reasons for this problem, but the required drivers are on my machine at present and I have also adopted the proper sequence for the installation process, the initial one is by using the Notebook System Software, but I still faced an error during installation of the program.
It shows as this "Error 1327. Invalid Drive: G:" I am not certain what this means and I need some help.
Here is the screenshot of the said error message:

I shall be really thankful to your help.
