This problem is likely to be a lost connection. The connection between the MK700 keyboard and the USB receiver can be lost due to several reasons:

• Low batteries
• Moving the USB receiver from one USB port to another
• Moving the USB receiver to another computer
• Plugging the USB receiver into a USB hub or other unsupported device such as a KVM switch (your USB receiver must be plugged directly into your computer)
• Radio frequency (RF) interference of more powerful wireless devices such as:
  • Wireless speakers
  • Computer power supplies
  • Monitors
  • Cellular telephones
  • Garage door openers

Eliminate any problem sources mentioned above that might be affecting your devices.

Before connecting your MX700 keyboard:

1. Make sure you have fresh batteries in your keyboard. For battery installation instructions, please see Knowledge Base article 360023223714.

2. Make sure the keyboard is turned on. Turn the keyboard over. If the power switch is pushed to the OFF position, move it to the ON position.

   

3. Make sure the USB receiver is directly and securely plugged into a working USB port on your computer.

4. Turn your computer on.

5. Follow the below procedure to re-connect your keyboard.

Re-connecting your MK700 keyboard:

1. Go to Start > Run.

2. Type in C:\Program Files\Logitech\SetPoint\connect.exe.

3. You will see the Connect Utility screen as shown below:

   

4. Follow the on-screen instructions.

5. You will see the following window:

   

6. Click Done if your keyboard is working, otherwise, click Retry.

Additional Information:

If the above solutions do not resolve your problem, consult Knowledge Base article 13855 for instructions on contacting Logitech Technical Support.