What you've given in your question is hardly enough information to begin diagnosing whatever your problem might be. What happens when you try to boot up? Does it try to boot your normal user account and fail? What if any error messages do you get?
You didn't answer the question. Does it boot into your normal user account? It is normal in Safemode to have only basic VGA settings and no available adjustment since only basic graphic drivers are loaded in safemode. If the system is automatically logging into safemode you have a different problem. Look in Control Panel>User Accounts. What is there? What happens if from safemode you press Ctrl.Alt Del, select users tab and log off. What logon options are you given?
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