== =[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] ===
Reset BIOS settings to default for ===[[Fitlet2https: Revision Notes#fitlet2 Rev 1//fit-pc.2 | fitlet2 revisions 1com/wiki/index.2 and laterphp?title=Troubleshooting_fitlet2_-_UKLog.dat_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]]:===
===[[Filehttp:Fitlet2_rtc_rst//www.png]fit-pc.com/web/support/rma/ RMA procedure]===
#Unplug power cable from the fitlet2#Remove the 4x Phillips Chassis screws#Remove bottom and top cover#Remove the RAM stick #Plug in power cable (should turn on automatically), and Wait ~10 seconds#Unplug power cable#Assemble back the RAM stick#Press the RTC reset button. #Plug power cable (should be automatically turned on) BIOS settings should be reset to defaults. * For fitlet2 older than rev 1.2 see [[Fitlet2 BIOS reset for rev 1.1 and older]] == 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 [httpCategory://fit-pc.com/wiki/index.php/fitlet2_Troubleshooting#2._Check_memory_.28RAM.29 Check memory RAM] to diagnose Memory == fitlet2 Linux system periodically fails to boot after pressing power button == * If your Linux system periodically fails to boot after pressing power button and messages like "watchdog: BUG: soft lockup - CPU#2 stuck for 23s!" appears, please do the following BIOS settings changes: # Press [Del] during boot to enter BIOS settings:# Set Chipset -> South Cluster Configuration -> SCC Configuration -> SCC SD Card Support to [Disable] == fitlet2 running Linux does not have a working audio out/SPDIF ==* If your default BIOS setting "OS Selection" is set to [Windows] but [Linux] is desired, then run the following [https://fit-iot.com/files/download/fitlet2/sw/scripts/fitlet2_alc1150_hda_patch.sh script] and reboot the system Code: $ sudo ./fitlet2_alc1150_hda_patch.sh $ sudo reboot == After starting the OS (Windows) there are few un-recognized devices under Device Manager == ===Check the BIOS settings===# Reboot your machine# Enter the BIOS menu# Under Main menu find "'''OS Selection'''" and make sure it is configured to "'''Windows'''" (see the attached screenshot)# Save the changes and exit. # After starting the OS make sure you have all necessort drivers installed. Please refer to [https://fit-pc.com/wiki/index.php?title=Windows_10_drivers_for_fitlet2 Windows 10 drivers for fitlet2][[File:Un-recognized_devices_Fitlet2_Windows10.jpg]]
