Cannot get my Ubuntu to work

As I try to stat up my Ubuntu lenovo dual boot with windows 7 ultimate...and after upgrading from 12.04 to 12.10

I get the following statement

System running in low graphics mode, your screen, graphics card, input devices settings could not be detected correctly, you will need to configure these yourself....

My graphic cards runs on windows and it ran properly before my upgrade...

How can I resolve this problem

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