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If you are experiencing key chattering, as known as keypresses registering twice, double letters typing keys, or miss typing keys, you may want to do few troubleshooting steps and see where the problem is coming from.

Mechanical switch typically is composed of a stem, metal spring, switch housing and metal leaves. Metal leaves contain two metal components that register keypress when in contact, and it is a natural occurrence when key switch chattering as known as “contact bouncing” happens.

Key switch chattering, or “contact bouncing”, is a natural occurrence in all mechanical switches which can cause a switch press be detected as multiple presses.

However, there may be other factors can cause key switch chattering. It may be the USB cable between your computer and keyboard, the USB port from your computer is not communicating well with the keyboard, or operating system driver was not installed properly.

We recommended you try following steps if it can be resolved:

  1. Try the keyboard on a different computer.
  2. Try with a different USB cable.
  3. Use USB 2.0 port instead of USB 3.0 port on your system.
  4. Connect the keyboard to your computer USB port 2.0 directly. Do not use any USB hub.
  5. Make sure no other thing jamming the switch
  6. Resetting Tesoro Keyboard to factory setting. Unplug your keyboard, press down both B key and L key, plug in your keyboard to your computer while continuing pressing down B and L keys for 3 seconds and release B and L keys.
  7. If you have any Tesoro software installed, uninstall all. Please backup your preference, profile, or configuration before uninstall software.
  8. Uninstall operating system drivers. Go to your device manager, or right click on your Windows Start icon from lower left corner on your screen and select device manager, find “Human Interface Devices” and expand the list, you will find few “USB Input Device”. Double click on each of them and in properties, find “Details” tab and you will see Property and Value inside. Change Property to “Hardware Ids” and at value box it will show something similar to “USB\VID_xxxx&PID_xxxx&xxxx”. Find “USB Input Device” that Hardware Ids are begin with “USB\VID_195D” and uninstall all of them while leaving your keyboard still plugged in on your system. Shutdown your computer, unplug your keyboard, restart your computer, and once your system is fully booted into operating system, plugged in your Tesoro keyboard and wait for all necessary drivers being installed.
  9. Download and update keyboard firmware from Tesoro website product page.
  10. Reinstall Tesoro keyboard software.