===Airtop2 BIOS reset:
# Power down the PC and unplug the power cable.
# Open the service door.
Verify RAM modules are installed. The system will not boot without it.
Verify power up without storage. Sometimes damaged drives may cause the overall system to malfunction.
*Verify the power supply is not damaged and functions properly.
*If you have another power supply use it to eliminate and determine the failing side.
*In case you use other power supply make sure it provides uninterrupted power and stable grounding.