Changes

===I can't turn on the computer, it doesn't wake up?===# * Please use the [[Airtop2 LED behavior description]] for further diagnostics.'''LED Diagnostics feature is available only for models configured the with FM-AT2 FACE module''' ===1. Check power supply (PSU)===*Make sure the LED on the power brick is lit.*Make sure the DC cable is not damaged and connected properly to the machine.*Make sure the AC cord is properly plugged to both sides (power brick and to the wall).*Try to plug the DC cable to the alternative DC socket on the Airtop2 BIOS reset. ===2. Check memory (RAM)===*Verify diagnostic LED (R) lit <span style="background:Green">Green</span>*.*If lit in <span style="background:yellow">Yellow</span> it means memory initialization has failed.*Verify RAM modules seated correctly and firmly in their respective sockets.*Try to eliminate faulty memory sticks by swapping them with one another. '''*LED Diagnostics feature is available only for models configured the with FM-AT2 FACE module''' ===3. Check Peripherals (HDD/SSD/USB)===*Unplug peripherals and try to power up with bare minimum, that includes HDD/SSD/USB devices.*Verify power up without storage. Sometimes damaged drives may cause the overall system to malfunction. ===4. Airtop2 BIOS reset===## *Power down the PC and unplug the power cable.## *Open the service door.## *Remove the disks cartridge.## *Reset the BIOS by pressing the low profile push button SW1 (RTC_RST).## *Mount the disks cartridge and close the door.## *Plug the power and power up the PC (either auto-on or pressing power button).

# '''Check memory LED-B (RAMBIOS)*'''Verify RAM modules are installed This LED is <span style="background:yellow">Yellow</span> after display initialization. If BIOS setup menu is needed, the DEL button is functional from the moment the B-LED is <span style="background:yellow">Yellow</span>. The B-LED is <span style="background:Green">Green</span> when the OS takes charge of the system will not boot without it. '''*LED Diagnostics feature is available only for models configured the with FM-AT2 FACE module''' == Airtop2 with Linux starts up with flickering/bad display == * [[Airtop2 running on embedded GPU is flickering/bad display on Linux]] == I don't have any display output, there's nothing on the screen == ===1. Screen functionality and connectivity===* Make sure both power and display cables are connected firmly on both sides.* Advise the H(Hdmi)/D(Display port) LEDS, <span style="background:Green">Green</span> means the cable is connected to the monitor properly.** Make sure the screen is turned On and is functioning.* The best way to check screen functionality is by connecting to a good known working machine. '''*LED Diagnostics feature is available only for models configured the with FM-AT2 FACE module'''

# '''Check storage (HDD/SSD):'''Verify power up without storage===2. Sometimes damaged drives may cause the overall system Validate memory===*Display issues on POST are a common symptom of incorrectly assembled or bad Memory DIMMS*Please refer to malfunction[http://fit-pc.com/wiki/index.php/Airtop2_Troubleshooting#2._Check_memory_.28RAM.29 Check memory RAM] to diagnose Memory

# '''Check power supply (PSU)[[Category:'''*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.Airtop2]]