Display guides
Televisions, monitors and screens — picture, sound, remotes and connection faults.
11 guides
TV apps not working
Compare a second TV app before resetting. Follow Samsung's cold boot and app repair steps, or LG's memory-warning branch, and check the connection if several fail.
TV has sound but no picture
Fix a TV with audio but a black screen: run the menu and flashlight tests to tell a failed backlight from a bad input, then check HDMI cables, ports, power resets, and picture settings.
TV says no signal
Fix a TV showing No Signal: the message proves the screen works, so the fault is the input, the source device, the HDMI handshake, or the cable. Includes the built-in cable tests.
TV has no sound
Fix a TV with no audio: run the built-in sound test to tell working speakers from a failed audio board, then check sound output routing, the headphone jack, per-input faults, and ARC or eARC soundbar setups.
TV remote not working
Fix a TV remote that stopped working: the TV’s own button tells you whether you’re fixing a remote or a television, then the phone camera test, a remote reset, and brand-specific re-pairing for Samsung Smart and LG Magic remotes.
TV won’t connect to Wi-Fi
Fix a TV that won’t join Wi-Fi: a phone hotspot proves whether the TV’s radio works, and the built-in network test names the failing step. Covers hidden and 5 GHz networks, password entry, DNS, signal strength and resets.
Monitor says no signal
Fix a monitor showing No Signal: its own menu proves the panel works, so the fault is upstream. Covers the graphics card versus motherboard port, input source, cable specification and forcing output from Windows.
Second monitor not detected
Fix a second display Windows won’t use: Windows+P separates a detected-but-unused monitor from one Windows cannot see. Covers the Detect button, the graphics driver reset shortcut, and adapter output limits.
TV screen flickering
Separate TV flicker from HDMI faults, automatic brightness changes and video-format transitions using the TV's own picture test.
Monitor keeps going black
A screen that turns off after a repeatable idle interval may be following Windows power settings. Blackouts during active use need a cable, direct-connection and graphics-driver comparison instead.
Monitor flickering
Microsoft has a five-second test that splits this in two. If Task Manager flickers along with the screen, the display driver is the cause. If Task Manager stays steady, an app is.