The CMOS battery, also known as the Complementary Metal-Oxide Semiconductor battery, is a small battery found on most modern motherboards. It provides a small amount of power to the computer’s basic input/output system (BIOS) in order to keep it functioning and maintain any settings that are stored within the BIOS, such as the computer’s time and date.If the battery's voltage output is less than 2.3V, please change a new one battery on the motherboard.

You can refer to the following pics to check the CMOS battery Voltage.

Red wire = V+

Black wire = V-

Sintrones' products are primarily designed for use in vehicle computers. Therefore, we have specifically provided an ignition switch on our products to power on or off your vehicle computer. Please refer to the following ignition connection instructions.

Ignition Power Management Quick Guide

Startup/shutdown conditions from the IGNITION signal:
◆ IGNITION startup signal must be valid during 3 sec. (anti-noise protection).
◆ IGNITION shutdown – IGNITION signal must be inactive during 3 Sec, then PIC
controller initiate Power Button signal (OS must be set to shut down from the
Power Button). It generate Main Button shutdown event and then goes to
complete power off.

Typically the system can start only from IGNITION signal, because startup PIC controller
is disconnected from the power source.
The system can be switched off from:
◆ Power IGNITION OFF signal.
◆ ACPI OS shutdown
◆ Power Button – generate ACPI event (OS dependent)

1. Enter BIOS menu to check following settings: Chipset > PCH-IO Configuration > SATA And RST Configuration.
   If there has storage but no boot manager in boot priority, please check whether OS has been installed in SSD first.
2. Try another SSD port or use another SATA cable.
3. Switch another good SSD.

1. Check status of power button: Does light of power button keep blue? If yes, please try step 2; If not, please refer to “Can’t boot” “Link” page.
2. Check whether memory installed property.
3. Check whether there are MXM graphic card installed.
   
   1. ABOX series with MXM graphic card, use HDMI port to try again.
   2. ABOX series without MXM graphic card, use DP, VGA or DVI to try again.
4. Use another display port. For example, when system has two display port, use display port 1 but no display, please try display port 2.
5. Connect monitor and system via cable directly, don’t use any converter. And make use cable is same type in two ends. (DP-DP cable or HDMI cable…etc)
6. Remove all of storage/module besides memory and SSD which installed OS if you can, then power on to check display function.
7. If steps above can’t solve your problem, please collect information and report to technical support team.

Power on device, press “ESC” or “delete” to enter BIOS setup when it shows logo of American Megatrends.