If the anti-ghost key function fails, try the following methods to troubleshoot and repair: 1. Confirm whether it is an anti-ghost key problem, use the test website to detect the key combination; 2. Clean the keyboard and check physical damage, such as dust, loose key caps, etc.; 3. Replace the USB interface or computer to test to avoid using the hub; 4. Update the driver or firmware to check whether the full key is turned on; 5. If it is invalid, consider replacing the keyboard or sending repairs.

The function of the anti-ghost keys on the keyboard is invalid, which usually affects the typing experience, especially in games or scenes where multiple keys are pressed simultaneously. If you find that your keyboard anti-ghosting function is no longer working, you can troubleshoot and try to fix it from the following aspects.

Check if it is really an anti-ghost key problem

Sometimes you think that the anti-ghost key is useless, but in fact it is just a normal phenomenon of misjudgment or multi-key conflict.
The anti-ghost key does not unlimitedly support all keys pressing at the same time. Most so-called "6-key no-stroke" or "full-key no-stroke" keyboards also have their limitations. You can try pressing several keys at the same time on a keyboard test website (such as .keyboardtester.com) to see if any keys are missing or are identified incorrectly.

suggestion:

• Priority tests are given to common combinations, such as WASD Shift Ctrl, and other keys that are common in games.
• Don’t press too many keys at once, especially non-mechanical keyboards. The hardware design itself does not support too many keys to input simultaneously.

Clean the keyboard and check for physical damage

Dust and debris enter the keyboard, which may affect circuit contact, causing some keys to be unable to be recognized normally, making you mistakenly think that the anti-ghost keys are invalid. Especially for film keyboards or entry-level mechanical keyboards that have been used for a long time, this type of problem is more likely to occur.

How to operate:

• Use air blow balls or compressed air to clean under the keycaps.
• If it is a mechanical keyboard with removable keycaps, you can remove the keycaps and clean them further.
• Check for loose key caps, broken springs or stains on the PCB board.

Replace the USB port or computer test

Some motherboards or USB ports have unstable power supply, which may also cause the keyboard to fail to perform all performance normally. Especially when using the USB port of the hub or front panel, it is more likely to cause insufficient power supply.

You can try:

• Plug it directly into the native USB port on the back of the computer.
• Change the computer to test it to see if there is still a problem.
• Avoid using an extension cord or USB HUB.

Update driver or firmware

While most keyboards plug and play, some mid-to-high-end products require installation of specific drivers or enabling full functionality through manufacturer software, including the keyboard's punch-free mode.

Step reference:

• Check out the official keyboard brand website and download the latest driver or configuration software (such as Razer Synapse, Logitech G Hub, etc.).
• Check if there is a firmware update option.
• Confirm whether “full key without impulse” or similar functions are enabled in the software.

Consider replacing the keyboard or sending it to repair

If you have tried all the above methods but still haven't improved, it may be because of hardware aging or a problem with the main control chip. Especially for thin-film keyboards, the conductive layer inside is prone to oxidation or wear over time.

You can consider this at this time:

• If the keyboard is not valuable, just change to a more reliable mechanical keyboard.
• If it is a more expensive model, check whether it is still within the warranty period and send it to the official repair point for inspection.

Basically, these are the investigation directions. Not every keyboard can perfectly realize the "anti-ghost key". Choosing the right equipment and paying attention to maintenance is the long-term solution.

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