System Boot

If your system will not start, check the following:


  • If the power button is pressed, does the system turn on?

Power Supply:

  • Does the power supply light come on?
  • Is there a loud hissing sound coming from the power supply?
    if Yes, the power supply may need to be replaced.
  • Check power cable connection to the AC adapter
  • Check DC connection to the thin client
  • Does the power supply work with another Thinlabs system?
  • Does the power supply work on another electrical outlet?
  • Does the system work with a different Thinlabs-approved power supply?
    [NOTE: Using non Thinlabs-approved power supplies with Thinlabs system voids all warranties].
  • Does the power supply connector fit snugly into the DC-In Port of the motherboard?


  • Is a Thinlabs-approved PoE switch being used?
  • Is the PoE switch powered on and configured correctly?
  • Is the port on the PoE switch to which the system is connected working?
  • Is the CAT5e/CAT6 network cable from the PoE switch to the PoE-In port working?
  • Has sufficient time been given for the system to boot (systems with PoE BIOS may take up to 30 seconds to display a welcome screen as there is low-level negotiation between the PoE switch and system)?

PoE Injector:

  • Is the power cord properly connected to the Injector, and the power light from the injector on?
  • Is there a network cable connected from the "OUT" port of the injector to the "IN" port of the system's PoE splitter?
  • Is a network cable connected to the "IN" port of the injector?

External PoE Splitter:

  • Is there power from the PoE splitter to the motherboard power port?
  • Is the PoE working on another system?


  • Is the battery charged?  If yes, the battery may need resetting.  See this FAQ.
  • Is the proper charger being used to charge the battery?
  • ONLY connect the charger to the battery - DO NOT directly connect the battery charger to the system as the motherboard will be overloaded and short out, voiding the warranty.
  • Is the battery properly connected to the system?  
    See the FAQ on Battery support for more information.
  • Is the battery cable in good condition?


Does the system power up?

  • If No, then the system is defective - request an RMA for replacement.
  • If Yes, enter BIOS at bootup and see if the device is detected.
    If the device is not detected, request an RMA for replacement.


SNs affected: Windows Embedded Devices

To run CHKDSK utility, EWF Manager must be set to Disabled.
If your system is set to Enabled, the system will not save changes made by the CHKDSK utility.

  • During the Windows boot process, press a key to cancel CHKDSK when prompted.
  • Open EWF Manager, select Disable EWF and reboot.
  • Allow CHKDSK to run - the system will automatically reboot.
  • Log on with Administrator-level privileges.
  • Press the Start button and type CMD in the Search bar.
  • Right-click CMD.EXE and choose Run As Administrator.
  • Type:
      chkntfs /x c: d:
      [press ENTER].
  • Close the command prompt.
  • Open EWF Manager, select Enable EWF and reboot.


Verify the boot option settings are correct in the BIOS (TL23, TL24, TL85, TL86 models).

  • Press DEL to enter BIOS.
  • At the Save & Exit menu,
    select Load Optimized Defaults
  • At the Boot menu,
    under Boot Option #1,
    select Windows Boot Manager (P1: [device name])
  • Press F4 and select Yes to Save & Exit Setup.


Is the storage device detected?  Start up the system and go into BIOS.  Check the Boot menu to see if the proper disk is detected.

  • If No, then the disk is defective - request an RMA for replacement.
  • If Yes, then exit BIOS, and at the GRUB menu, check to ensure the proper OS is being loaded.  If the OS quits while loading, contact your company's support team for instructions on how to reimage your system


From the Windows desktop:
- click the Search icon and type CMD [ENTER]
- right click on 'Command Prompt' and select 'Run as Administrator'
- click Yes to confirm
- type: 'chkntfs /x c: d:' [ENTER] (no quotes)

- close the Command Prompt window
- Reboot the system