Disable System Restore. It's no good to you now and may contain a virus. Re-enable when system is known to be clean and booting to Windows normally.

http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001111912274039?OpenDocument&src=sec_doc_nam

Check your Device Manager for corrupt drivers (yellow markings). Uninstall any bad drivers and restart. If system boots to normal Windows re-install updated driver(s) for the one(s) you uninstalled.

 Run a virus scan and AdAware.