Check HDMI connection on both device are secured

Ensure HD monitor is powered ON and set up

Ensure correct source channel is selected on the HD monitor

Ensure devices are powered ON

Change HDMI cable

Enable Wi-Fi in Settings > Network

If supplied, ensure attachment antenna is securely connected

Ensure router/modem is powered ON and configured properly to connect to

Relocate device closer to network access point

Reboot all routers, modems, wireless access points and other Wi-Fi devices

Turn ON only those devices required to establish the network connection (e.g. modem and wireless router). Avoid connecting other devices to the network

Avoid having other signal processing devices nearby (e.g. 2.4GHz phones or microwave ovens)

Plug in various USB devices to test the USB ports

Check USB ports for any damages or unwanted material/debris inside

Toggle OFF Bluetooth for 10-20 seconds, then toggle back ON

Test Bluetooth connection with various Bluetooth devices

Power OFF device for 10 seconds, then power back ON

Close/Force Stop any unnecessary applications running

Power OFF device for 10 seconds, then power back ON

Un-install and then re-install affected applications

Ensure line of sight from remote to device with up to 10 meters distance

Insert another appropriate set of batteries to power the remote and test operation

Press and test all various buttons on the remote

Power OFF device for 10 seconds, then power back ON