Every computer motherboard comes with a BIOS (Basic Input/Output System) menu that is used for configuring hardware settings and motherboard options. It's easy to accidentally change an important setting in the BIOS menu. If you were in the BIOS menu recently and now your monitor won't work, you'll need to reset your BIOS to fix the problem.
Instructions
1. Turn off your computer and remove the case cover. Move your computer case to a location where you can easily access the inside (such as a table). Keep all the cables, including power, plugged into it. You have two options for resetting your BIOS.
2. Look for a "Clear CMOS" or "Reset" button or switch on your motherboard. If your motherboard has such a button or switch, press the button or move the switch and then start your computer. The BIOS will now be reset and your monitor should work again. If it was a switch, shut your computer down and move the switch back to the normal position.
3. Look for the CMOS battery if you can't find the CMOS button or switch. This will be a circular battery, like what's often used to power wrist watches. If your motherboard has one, disconnect the battery for several minutes and then reconnect it. Start up your computer; the BIOS will now be reset and your monitor should work again.
Tags: your computer, button switch, reset your, your monitor, your motherboard