How to reset motherboard bios without keyboard.
1
Power down your computer. Either use the Start menu to shut down, or press and hold your computer's power button until the computer shuts down.
If you're using a desktop computer, you can usually turn the CPU entirely off by pressing a switch on the back of the CPU box.
2
Unplug your computer from any power sources. This includes power cables for desktop computers and charging cables for laptops.
3
Remove your computer's battery if necessary. If you're using a laptop (or a desktop with a backup battery), remove the battery before continuing.
4
Discharge any static electricity before continuing. Touch a nonpainted metal surface to get rid of any static electricity before you start taking apart your computer. Touching the motherboard or other internal computer components while not properly grounded can permanently damage your computer.
6
Find the CMOS jumper. Locate the three-pin jumper on your motherboard that controls the BIOS. It will usually found near the CMOS battery. The jumper will be covering two of the three pins.
The jumper may be labeled CLEAR, CLR, CLEAR CMOS, PSSWRD, or a variety of other labels. Refer to your motherboard's documentation to find the correct jumper.
7
Move the jumper to the other two pins. For example, if the jumper is covering the first and second pins, move it so that it is covering the second and third pins. Be sure to pull the jumper straight up to remove it so that you don't bend the pins.
8
Press your power button. Press and hold the power button on your computer for about 10-15 seconds to discharge any remaining power stored in the capacitors. This will make the BIOS reset.9
9
Return the jumper to its default position. Put the jumper back on the pins that it was originally on. This will allow you to access your BIOS when you start your computer up.
10
Reassemble your computer. Do so carefully, and remember to ground yourself periodically.
11
Reconnect your computer's power source(s). If you unplugged the computer from the wall and/or removed the battery, plug it back in and/or replace the battery.
12
Turn back on your computer. Depending on your computer, you may have to access the BIOS and reconfigure some of the options, including the default boot option or the date and time.
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