Hello,
There are several possible reasons why your keyboard is inputting random letters when you press certain letters. One of them is that your keyboard layout may be set to a different language or region than the one you are using. To check this, go to your settings and look for the keyboard or input method option. Make sure it matches your preferred language and region. Another possible reason is that your keyboard may have some dirt or dust under the keys, which can interfere with the signals sent to your computer.
To fix this, you can try cleaning your keyboard with a soft cloth or a compressed air can. You can also remove the keycaps and clean the switches underneath, but be careful not to damage them. A third possible reason is that your keyboard may have some faulty or damaged wiring or circuitry, which can cause some keys to malfunction or send wrong signals. This may explain why your number keys are working fine, but not the letter keys. To fix this, you may need to replace your keyboard or have it repaired by a professional.
If none of these solutions work, you may have a software issue or a virus that is affecting your keyboard input. You can try scanning your computer for malware, updating your drivers, or restoring your system to a previous point. If you still have problems, you may need to contact your computer manufacturer or a tech support service for further assistance.