when i leave my pc unattended or have it go to sleep there is a problem when i come back to use it. the mouse cursor turns to a small magnifying glass and does not respond to movement. why is this happening? very frustrating.

First, plase let us know if you can wake your machine from sleep mode successfully, and the exact brand and model of the computer and mouse. If you can't wake up your pc normally, it's better to update your mouse driver and other drivers, BIOS for your machine first, then check the "Allow this device to wake the computer" in the mouse properties in the Device manager. In addition, you can try the following two methods: 1. test in Clean Boot to avoiding third party conflicts, you can refer to KB929135. 2. test in a new account. Good luck!--------------------------------------------------------------------------------John