02-20-2013 05:02 PM
This is the mk520 Wireless Combo.(Keyboard: K520. Mouse: M310)
I plug in the USB receiver, the keyboard works well but the mouse doesn't. The mouse doesn't move at all but its left click, right click, and the mouse wheel works okay. I place the mouse on newspaper, smooth table, and mouse pad, but it still doesn't move at all. I try this on my friends' laptops which are also Windows 7 x64. Same problem again, keyboard works but mouse doesn't move. Also, I try different USB ports and install the Unifying Software, it still doesn't move at all.
02-21-2013 05:44 PM
Since you already tried all those troubleshooting steps, it seems that it could be a hardware issue.
I highly recommend that you please place a call to our Logitech Phone Support center to see how we can help.
12-06-2013 12:43 PM
Hi I have bought the Logitech Combo MK520 a month ago. The Keyboard works fine but the M310 mouse does not work properly. Once I start my PC the mouse and the keyboard work fine for around 15-20 minutes and then all of a sudden the left click on the mouse stops working. I can only do a right click, scroll and move the mouse but no left click.
I also noticed that after this issue the battery of the mouse also drains quickly. Any suggestions how to fix this. Thanks