== =[https://fit-pc.com/wiki/index.php?title=Fitlet2_Troubleshooting_-_I_can%27t_turn_on_the_computer,_it_doesn%27t_wake_up I can't turn on the computer, it doesn't wake up ] ===
===1[https://fit-pc. Check power supply (PSU)com/wiki/index.php?title=Fitlet2_Troubleshooting_-_I_don%27t_have_any_display_output,_there%27s_nothing_on_the_screen I don't have any display output, there's nothing on the screen] ===*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 (Wall mounted well plugged).*Trying an alternative adapter could eliminate bad PSU.
===2[https://fit-pc. Check memory (RAM)com/wiki/index.php?title=Troubleshooting_fitlet2_-_Linux_system_periodically_fails_to_boot_after_pressing_power_button fitlet2 Linux system periodically fails to boot after pressing power button] ===*Verify RAM module is seated firmly in its socket.*Try to eliminate faulty memory sticks by swapping it with one another.
===3[https://fit-pc. Check Peripherals (HDDcom/SSDwiki/USB)=index.php?title==*Unplug peripherals and try to power up with bare minimum, that includes HDDTroubleshooting_fitlet2_-_running_Linux_does_not_have_a_working_audio_out/SSDSPDIF fitlet2 running Linux does not have a working audio out/USB devices.*Verify power up without storage. Sometimes damaged drives may cause the overall system to malfunction.SPDIF] ===
===4[https://fit-pc. fitlet2 BIOS resetcom/wiki/index.php?title=Troubleshooting_fitlet2_-_after_starting_the_OS_(Windows)_there_are_few_un-recognized_devices_under_Device_Manager After starting the OS (Windows) there are few unrecognized devices under Device Manager] ===
*For BIOS version FLT2===[https://fit-pc.0com/wiki/index.40php?title=Troubleshooting_fitlet2_-_UKLog.01.00 and abovedat_file_on_Windows_10_OS_takes_up_all_the_free_disk_space UKLog.dat file on Windows 10 OS takes up all the free disk space] ===
Reset BIOS default following the following procedure===[http://www.fit-pc.com/web/support/rma/ RMA procedure] ===
# Unplug power cable from the fitlet2#Remove the 4x Phillips Chassis screws#Remove and bottom and top cover#Remove the DIMM stick #Plug in power cable (should turn on automatically)- ~ Wait 10 seconds#Unplug power cable#Assemble back the DIMM stick#Check which revision the fitlet2 SBC is – should be on the print side, should be printed on top of the board (where the DIMM is located)#'''If the fitlet2 SBC Revision is 1.2''' --> Press the RTC reset button near ##Otherwise '''if the fitlet2 SBC Revision is 1.1''' --> carefully unplug the RTC Battery from the 2pin connector.#Plug power cable (should turn on automatically)#Continue steps for revision 1.1 (RTC battery had to be disconnected):##Shutdown the PC##Unplug the power cable##Plug the RTC Battery back in##Plug Power cable At this stage the BIOS settings should be reset to defaults. == 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.* 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. ===2. Validate memory===*Display issues on POST are a common symptom of incorrectly assembled or bad Memory DIMMS*Please refer to [http[Category://fit-pc.com/wiki/index.php/fitlet2_Troubleshooting#2._Check_memory_.28RAM.29 Check memory RAMfitlet2]] to diagnose Memory
