[ubuntu] No gui after closing/opening laptop

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http://ubuntuforums.org – I recently installed ubuntu 12.04 via Wubi on an Compaq laptop with Vista. It works fine for the most part except for one thing - when I boot up to Ubuntu and close/reopen the laptop the screen is frozen. It shows nothing but static and the cursor. I'd like to fix this, but even if there was a shortcut way to get the GUI back (icons for applications) with some sort of shortcut that would be a big improvement. If I click control-altf1 I get the command line, and if I click control-alt-f7 I get the frozen static screen. What can I do to fix this? (Hardware)