Hi curse,
1. Use the latest version of Bandicam
http://www.bandicam.com/downloads/
2. Start Bandicam before the recording target program
3. Turn off UAC or run the recording target program as administrator.
4. If you still can't record, send an email at
bandicam@bandisoft.com with the following information
1) Can you record with "Rectangle on a screen" capture mode of Bandicam?
2) Do you use Windows XP or Vista/7?
3) What are you trying to record? (YouTube videos? or Minecraft games?)