Hello, I know this thread is pretty old but still wanted to know if a solution was ever found? I recently came into possession of an OQO model 02 and am having the same problem. Did anyone ever figure out anything? I managed to get it to boot after performing a startup repair (using the Windows 7 disc) and it shows "Activated", but after restarting it, I would be stuck in the black screen with a cursor.
Change the loaders advanced settings a little. Select to use the legacy mode and then reinstall the loader.