Mouse pointer Invisibile

Hello, I have a damn problem. Sometimes, on some games, when I am on the main menù (e.g. BF3 select kit equipment etc), mouse pointer disappears. That is so weird! -> If I move the mouse I got the text of the various menu items highlighted, I press the buttons and I select what I need: it works. The problem is that without seeing the mouse pointer is all very frustrating. Do you have few ideas to fix this? I tried: unistal/instal mouse/vga driver, alt+tab. alt+esc, alt+enter and No way: pointer can't be visualized. os w7 videocard ati 5770 Thanks in advance

upppp

fixed: dx mouse button on desktop -> customize -> windows 7 basic theme : )

Thanks, good to know and it may help some one else...