A personal computer includes a motherboard, video graphics adapter, mod board, switching board and single board computer. The switching board includes a microcontroller and USB and video switching circuits. A networked server includes a limitations database. The mod board is connected to the front panel signals of the motherboard and the main switching board connects to the mod board, the single board computer and the video graphics adapter. Upon user input to a program running on the single board computer, the program makes a server request. Response data is sent to the microcontroller on the switching board and, if time is available, switches the USB keyboard to the motherboard, the video output to the video graphics adapter and signals the mod board to power on the motherboard. The program on the single board computer signals the switching board to switch back video, USB and motherboard power when allowed time expires.