The most likely cause of a keyboard not typing correctly is either a hardware or software issue.
Hardware issues:
1. Malfunctioning keyboard – If your keyboard is malfunctioning, it may not be able to properly detect the keystrokes you are making. Some signs of a malfunctioning keyboard include unresponsive keys, keys that produce incorrect characters, and keys that do not respond at all. In some cases, simply cleaning the keyboard with a can of compressed air can resolve the issue. If this does not work, you may need to replace your keyboard.
2. Loose cable connection – If your keyboard is connected via a USB or PS/2 cable, try unplugging it and then plugging it in firmly again. If the connection was loose, this will often resolve the issue.
3. Bad USB port – If your keyboard is connected to a USB port, it could be possible that the USB port itself is faulty. To test if this is the case, try connecting the keyboard to another USB port (on the same device or a different device). If the problem persists, then the port may be at fault.
Software issues:
1. Outdated drivers – If the keyboard is connected to a USB port, check to see if your USB drivers are up-to-date. Outdated or missing drivers can cause various problems with your devices, including keyboards. Make sure you download the correct drivers and install them on your computer.
2. Software conflicts – If you recently installed a new program or application, it is possible that it is conflicting with the keyboard driver. In some cases, simply removing the conflicting software can resolve the issue.
3. Incorrect language – If you recently changed your computer’s language settings, it is possible that the language assigned to your keyboard is incorrect. To change the language, you will need to go into the control panel and select the correct language.
4. Virus or malware – Viruses and malware can damage your computer’s hardware and software and interfere with the normal functioning of your keyboard. If your security software detects any malicious programs, you should remove them as soon as possible.