Toshiba regza 37" reset defaults

Unplug the TV for some time (usually 1hr is plenty) and it should reset to factory settings.

From the manual, To reset all settings and channels to their factory default values: 1 Press Menu and open the Setup menu. 2 Highlight Installation and press Enter. A new set of Installation menu icons will appear. 3 Open the System Status menu, highlight System Information, and press Enter. 4 Press to scroll through the menu bar to select Factory Defaults. 5 Enter your PIN code (or 0000 if no PIN code has been set) 6 Highlight Yes and press Enter. The TV will turn off automatically after a few seconds. After the TV turns off, unplug the TV power cord and then plug it in again to complete the reset process.