If the letter T on your Lenovo laptop keyboard cannot be entered normally and the keyboard is not damaged, it may be caused by the following problems:
1. Keyboard layout setting error: First, make sure you use the correct keyboard layout.Sometimes, the keyboard layout may be changed in the operating system or application.You can try to switch to the correct layout by pressing "Shift+Alt" or "Ctrl+Shift".
2. Sticky keys: sometimes, some dust, dirt or other substances may enter between keys during use.This may cause the key to jam or fail to trigger normally.You can try to solve this problem by using a compressed air tank to clean the entire keyboard, and gently tapping the T letter.
3. Driver problem: Check the device manager for any keyboard related warning signs.If so, right-click the device and select Update Driver to get the latest version.
4. Operating system software problems: Sometimes, after the operating system is updated, some functions may behave abnormally.Please ensure that the operating system and related software are updated to the latest version, and restart the computer for the changes to take effect.
5. Hardware failure: Although you said the keyboard was not damaged, there may still be a hardware failure.If none of the above methods is effective, you can consider sending your laptop for repair or contacting the manufacturer's technical support for further help.
Note that before attempting any changes or repairs, back up important data to prevent accidental data loss.
[Problem Description]: Some keys on the keyboard cannot be used [Cause Analysis]: 1Key position card key 2. Interface failure [Simple steps]: 1Check keyboard card keys 2. Check USB interface [Solution:]: Troubleshooting method: 1 Check whether the keyboard has key position card keys, such as whether there are foreign matters between keyboard keys, and whether the keyboard buttons are reset (press to see if they spring up normally).2. Turn off the computer and unplug the keyboard (if it is a USB interface keyboard, unplug it directly), turn the keyboard over and hit it several times, press the failed function key several times, and then connect it for testing. If it is still some or some buttons that fail, it can be basically determined that the keyboard is faulty, and it is recommended to repair or replace it, which generally does not involve system problems. If it is invalid, please see the following [Problem description]: How to clean the computer keyboard [Cause Analysis]: None [Simple steps]: Unplug the keyboard connector - Remove the keyboard shell - Clean the film - Clean the keys Clean the inside and outside of the keyboard - Install the keyboard [Solution]: 1Unplug the keyboard connector to shut down the computer, and then unplug the keyboard connector (generally the keyboard connector of the PS/2 interface is purple) from the host.Turn the keyboard over and tap it gently so that dust and debris can fall down automatically. 2. When removing the keyboard shell, there are usually a large number of fixed screws on the back of the keyboard.Insert the cross screwdriver into the fixed screw position, and rotate it counterclockwise to unscrew the screw.Then unscrew the other fixing screws one by one, and place the screws uniformly.Then turn the front of the keyboard down, and use a flat screwdriver to open the seam on the back panel of the mouse, so that the shell can be easily removed, and then you can see the internal structure of the keyboard. 3. Clean the film When you open the back panel of the keyboard, you can see three layers of films embedded in the bottom plate.The three films are lower contact layer, middle isolation layer and upper contact layer. The upper and lower contact layers are pressed with metal circuit wires and round metal contacts corresponding to keys. The middle isolation layer is a transparent film with round holes corresponding to the upper and lower contact layers.Remove the film from the keyboard, gently brush away the dust or dirt near the side of the key with a dry cloth or brush, or wipe it with clean water before air drying.If there is oxidation in the round metal contact of the film, wipe it with rubber. 4. Clean the key electrical contact All keys of the key keyboard are embedded on the front panel. There is a rubber pad between the three films on the bottom plate and the keys on the front panel. The protruding part of the rubber pad corresponds to the keys embedded on the front panel. After pressing the key, the corresponding protruding part of the rubber pad is concave downward to make the filmThe round metal contact of the lower contact layer contacts through the round hole of the middle isolation layer, thereby sending out the key signal.But when taking out the keys, take out the rubber pad first, and then use a screwdriver or other drivers to pull the keys from the bottom.However, we should pay attention to that when some large keys and rubber pads are taken out, they can be wiped with wet cloth and air dried.If the keys are dirty, add some detergent to scrub them. 5. Clean the inside and outside of the keyboard. Take out the circuit board on the base first, and then use a brush or wet cloth to wipe the front panel, back panel and base of the keyboard.Especially in the joints of the front panel and keys, there will be a lot of dirt. It may not be easy to clean with a wet cloth. It is recommended to use a cleaning agent to clean. 6. Install the keyboard. After the keys, rubber pads, films and panels are completely cleaned and dried, they can be installed.First, install all the keys in the reverse way of the previous disassembly (note that the position of the keys should correspond to the position on the keyboard, and the direction should not be reversed).Then put the circuit board back into the base and arrange the wiring.Then match the rubber pads with the keys one by one and place them in place.Then place the three-layer film on the rubber pad and determine whether it is placed in place. Usually there will be some prominent screw holes on the base. You just need to align the round holes on the three-layer film with the screw holes on the base one by one.It is recommended that you hold up the keyboard when installing the rubber pad and film. For one thing, it is easy to install, and for another, all components can be installed in place.Finally, cover the rear panel and tighten all the screws to complete the removal, cleaning and installation of the keyboard.
Turn off the power, check whether there is a card on the keyboard keys and the keyboard membrane, or there is no button that pops up.Start the machine for testing, and then uninstall all the input methods and reinstall them
