How to fix Razer Synapse not detecting mouse or keyboard issue

When Razer Synapse does not recognize your Razer mouse or keyboard, it may be a sign that the peripheral device is not functioning properly. Beyond that, you can't customize the device or load profiles required for games. Here's how to fix Razer Synapse not detecting mouse or keyboard on Windows PC.

These instructions apply to all keyboards and mice sold by Razer. However, keyboard and mouse issues may not be related to the Razer desktop software. Instead, the problem may stem from the connection between the peripheral device and the PC.

There are several reasons why Razer Synapse may not work.

This is a device management program. Any incompatibility between Synapse, Windows, device drivers, and devices can cause problems.

Most of the time this comes down to making sure everything is up to date, but there could also be other issues that are harder to pinpoint, such as a dirty or bad USB port.

These steps can help you diagnose and resolve potential issues with Razer Synapse. The steps are listed from easiest and most likely to most difficult and least likely to help you save time and get back to work as quickly as possible.

  1. Unplug and reconnect peripheral devices. Sometimes, there are problems with the connection. If you think it might be a port issue, plug the peripheral into a different port.

  2. Use a different computer. Test on another computer to make sure the USB port is not the problem. If it doesn't work, your device may have a hardware issue, such as a damaged USB connector or cable.

    This issue also applies to wireless mice if you rely on USB-based adapters.

  3. Restart the computer. Sometimes, just rebooting can get everything back to normal.

  4. Scan for device changes. This step refreshes Device Manager. Windows may not initially recognize the peripheral device you connect. Performing a refresh forces Windows to rescan the PC and all of its ports for newly added content. If a mouse or keyboard is found, Windows automatically installs the necessary drivers.

  5. Uninstall and reinstall the device. The main cause of mouse and keyboard detection errors is the number of unnecessary and potentially conflicting drivers. You may see a list of unwanted human interface device (HID) components, such as old mice and keyboards that you sold for extra cash. It's not uncommon to have a long list of HID components, but if you have problems detecting a new mouse or keyboard, removing these devices may help.

  6. Updated serial bus controller. The driver running the PC's USB port may need to be updated. This is a simple attempt to fix the problem through Windows before downloading and installing new drivers from the OEM or motherboard manufacturer.

  7. Install the latest drivers. You can use the Synapse application to scan for new drivers. You can also download and install drivers from the manufacturer for the best, most stable performance.

    For homebrew systems, download drivers directly from the hardware manufacturer. In this case, get the latest motherboard drivers from ASRock, Asus, Biostar, EVGA, Gigabyte, MSI, etc.

  8. Uninstall and reinstall Synapse. Since the hardware options have been ruled out but still without any positive results, uninstalling Razer Synapse is the next step. You'll also want to make sure there are no leftover Razer folders, which could mess up the new installation due to misconfiguration.

  9. Check Synapse version. If Windows recognizes your Razer mouse or keyboard but they do not appear in Razer Synapse, these devices may not be compatible with the version of Synapse installed on your PC. Razer Synapse 3 does not support all Razer brand devices.

    Check out the full list of Razer-supported devices and its Synapse 3 software on its website. If your Razer device is not supported, please download Razer Synapse 2.