Mainboard KM51PV-754
14
The following steps explain how to reset your CMOS
configurations when you forgot a system password.
USB Power Selection Header: JP3
USB devices attached to the back panel USB ports can awaken the system from sleep mode.
In order to enable this functionality, you must adjust the jumper caps on JP3 header for +5V or
+5VSB mode depending on which USB port that the USB device is attached to.
JP3
Assignment
Assignment
1
Pin 1-2 Close
+5V
S1 sleep mode (CPU stopped, DRAM
refreshed, system running in low power
mode)
1
Pin 2-3 Close
+5VSB
S3/S4/S5 sleep modes (no power to
CPU, DRAM in slow refresh, power
supply in reduced power mode)
Note:
Close stands for putting a jumper cap onto two header pins.
Clear CMOS Jumper: JP1
The “Clear CMOS” function is used when you are unable boot your system and need to reset
the BIOS settings (CMOS settings) back to the manufacturer’s original settings. This is also a
way to reset the system password if you have forgotten it.
JP1
Assignment
Pin 1-2 Close
Normal (Defult)
Pin 2-3 Close
Clear CMOS Data
Note:
Close stands for putting a jumper cap onto two header pins.
1. Turn off your system and disconnect the AC power cable.
2. Set JP1 header to OFF (2-3 Closed).
3. Wait several seconds.
4. Set JP1 header to ON (1-2 closed).
5. Connect the AC power cable and turn on your system.
6. Reset your new password.
