Step 1. Remove the network cable of Thinclient and do the below activity.

Step 2. Click on info icon.

Step 3. Keep the information dialogue box open and press "Alt+Ctrl+Shift+M".

Step 4.Select Full Desktop Mode and click Apply.

Step 4. Click Yes to reboot.

Step 5. After reboot, the Thinclient system started in full desktop mode. click on setting icon.

Step 6. In the Control Panel Click on Power Management.

Step 7. Untick All the Check-box in below snapshot and press OK.

Step 8. Reboot the Thin client and settings will be applied.