I would like to record a TV program of 2 hours. But whenever I press the "record" button, after 1 hour, a dialogue window will pop out to ask me to save the file. Why?

The timer on PowerVCR II is probably set as 1 hour. The Timer Setting enables you to set the maximum recording time. Please follow the steps to disable "Timer Setting". PowerVCRII --> System Setting --> Basic --> Timer --> Disable the setting.