Logitech Mouse is Unresponsive

• Restart your computer/Restart your Logitech Mouse if needed: Restarting your mouse can sometimes fix temporary glitches or clear out any temporary files that might cause issues. Be sure to shut down your computer completely, turn your mouse off, and remove the batteries to ensure the mouse can fully power cycle.
• Make sure the mouse is powered on: If you have a wireless mouse, make sure the power switch on your mouse is set to on. Alternatively, check that the batteries are fresh or the mouse is charged. If you're using a wireless mouse, check whether the battery is low or nearly depleted.
• Make sure the USB cord/receiver is plugged in: Make sure that the wireless receiver, or a wired mouse, is plugged into your computer, or try a different USB port.
• Pair a Bluetooth mouse:  If your Logitech mouse is Bluetooth-only or dual-mode, enable pairing mode (often by holding a Bluetooth button until a light flashes).
  • On Windows, open Settings > Bluetooth & devices, turn on Bluetooth, click Add device and choose Bluetooth, then select your Logitech mouse when it appears.
  • On Mac, open System Settings (or System Preferences) > Bluetooth, then turn Bluetooth on and click Connect beside the Logitech mouse.  (If the mouse does not appear, ensure no other device is paired to it and try again.)

Outdated or corrupted drivers can cause issues with how external peripherals work with your system.

• MacOS and Linux will use a generic driver for mice; however, if your mouse's manufacturer offers drivers on their website, try downloading the latest driver software from the manufacturer's site.
• Windows 10 and 11 will automatically search for new drivers; however, you might need to prompt the operating system to install the latest drivers. Press the Windows Key and I to launch the Settings app, then choose Windows Update from the left menu. From there, simply select Advanced options, then Optional updates, then Driver Updates to search for the driver for your mouse.

If your mouse is connected to your computer via a USB hub, the problem might be a bandwidth shortage. USB hubs can introduce latency or slow down data transfer, especially when other high-bandwidth devices like external hard drives are simultaneously plugged in.

• Try plugging your mouse directly into your computer. If your computer uses USB-C while your mouse uses USB-A, then you might need to invest in a USB-C to USB-A adapter.
• If not using the dongle isn't optional, then try removing any storage devices or any devices that might be drawing power. This should increase bandwidth and reduce any sluggishness of your mouse.

Wireless mice can be affected by other wireless devices. Try turning off other devices that might be causing interference.

• Remove any interference sources: Make sure that the device you are attempting to use your keyboard with isn't near any signal-generating hardware, such as wireless routers, access points, or streaming hardware, such as cable boxes, Apple TVs, Roku, Amazon Fire sticks, etc.
• Decrease Distance: Being too far from the device you are attempting to type to, or having physical barriers between you and the device, can weaken the Bluetooth signal, preventing a successful connection. Try to get as close to your device as possible, or at least try to be in the same room as it.

If none of the above helps and the mouse behaves the same on another computer, the mouse itself may be faulty.

• Disassemble the mouse and look for any burnt or damaged components: Make sure that the Scroll Wheel's axle hasn't become broken or otherwise damaged. If you observe any visible damage, the mouse's mainboard should be replaced.
• Check if the mouse wheel is damaged: If the mouse wheel itself is warped, cracked, or otherwise damaged, it can affect its performance. Inspect your mouse wheel carefully, and if you find any damage, try replacing it.
• Check whether the encoder is damaged: Mice use a sensor called a rotary encoder to detect when the mouse wheel is moved. Cleaning the encoder should be your first step; however, if it is damaged in any way, it should be replaced.
  • Optical encoders use an infrared light source and a disk with slots to detect the wheel’s rotation. To ensure proper functioning, try using compressed air to blow out any dust from the encoder. Additionally, you can apply a small amount of aerosol contact cleaner or isopropyl alcohol into the encoder's gaps to help the cleaner penetrate the internal components and remove oxidation and debris. Rotate the encoder shaft back and forth several times to facilitate this process.
  • Mechanical encoders, which rely on physical contact with a rigid surface and a follower to register steps, are more common in older mice. To ensure proper functioning, try using compressed air to blow out any dust from the encoder. You can also use Specialist WD-40 to remove any oil or dirt that might have worked its way into the encoder, but use it sparingly and allow it to dry completely before reassembling your mouse.
• Check for any main board damage: If all of the above solutions haven’t addressed your issue, the main board of your mouse is likely the cause. These can fail if the mouse has been exposed to excessive heat or moisture, or if it has been dropped, thrown, or otherwise slammed during that one vexing match of Siege. If you find the motherboard has been damaged, then it needs to be replaced.