I just bought a Razer Deathadder Essential mouse. But when I tried to register the product on Razer site, I get an error that the serial number is not recognized.
I also installed Synapse to adjust the DPI of the mouse, but Synapse doesn’t detect any device.
I tried restarting my system, running Repair on Synapse but nothing is helping.
The mouse works fine otherwise, so doesn’t seem to be an USB issue.


