Troubleshooting

BenQ monitor showing ‘No Cable Connected’? The fix is usually selecting the correct input source manually. Here’s what to check and how to fix it fast.

Laptop not detecting second monitor? Check cables, update drivers, and use Windows Detect display settings. Full troubleshooting guide with quick fixes.

USB-C monitor not working? The most common cause is a cable without DisplayPort Alt Mode support. Here’s how to diagnose and fix it fast.

USB-C dock not recognized? Fix it fast with these checks: correct cable, right port, power sequence, updated drivers, and DMA policy settings.

An HDCP error on screen means the copy-protection handshake failed between your source and display. Here’s why it happens and how to fix it fast.

VGA looks blurry because it carries an analog signal that degrades easily. Learn the causes and fixes to get a sharper image from your VGA connection.

TV not controlling soundbar with CEC? Learn the exact causes and fixes — wrong port, disabled CEC, bad cable, or conflicting settings.

Laptop not charging through USB-C? The most common causes are a cable without Power Delivery, low-wattage charger, port debris, or a disabled BIOS setting.

TV not showing HDR? The most common causes are the wrong HDMI cable, a disabled TV port setting, or HDR turned off at the source. Here’s how to fix it.

Audio hum or buzz is almost always caused by a ground loop. Learn what causes it, how to fix it fast, and when you need extra hardware.