She has put this mouse on it and it has not had the issue so far. The issue was happening with my Razer Lachesis when I was using the computer so I am confused.
Well I am as well.
I recommend you uninstall and then install the driver for that mouse that you were using the Razer Lachesis if the link does not stay on the selection I am sure you will easily find the one for the Windows7 It is for 64 or 32 bit and is dated 3 May 2011.
Good Luck, but it is well nigh impossible to diagnose the error and the cause when you do not now have it of course, having changed the mouse.
IF by chance I have misinterpreted what you are telling me please do NOT hesitate to correct me, . and I will of course continue - saying apologetically.
Finally Happy New Year for 2012.