I get this message ... "You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again." I kept trying to boot OS X Lion (10.7.2) into 32 bit mode (needed to install GPIB drivers for NI LabView), but nothing seemed to work. I tried the rebooting while holding "3" and "2" ... I even tried the sudo command. Nothing worked. Lastly I resorted to editing my com.apple.boot.plist ... Now every time I start my computer I am faced with this message. Is there any way to undo this?