Guild Wars 2

just started playing again and after a few minutes of play my game pointer vanishes making the game unplayable as i`m a left handed player(use my mouse with my left hand).I use a razor death-adder 3.5g left handed mouse. Also when i press m to bring up the map the game quits to desktop without an error message. my system meets the requirements to play the game. OS is win 7 64bit so it utilises the 4gb ram i have gfx card is a gtx 560 ti. cpu is an intel 17 860 so im at a loss as to why this is happening and i tried a reinstall of the game.
Can anyone help??

I had the same problem after I updated my Nvidia video driver and installed Precision X 16. I also noticed that Logitech setpoint was not showing active anymore.
I did a windows restore and it unloaded Precision X16.
Now the cursor does not disappear and Logitech setpoint is back.
The NVidia driver update also loaded a mouse driver. but that doesn’t seem to be causing a problem so far.
I am going to try and reload an older version of precision X.

reloaded precision x 4.2.1 and working fine