Mouse not showing up on screen during certain PC games?

I have a few games that I play on my computer and for some of them my mouse cursor is not visible on menu screens. It still functions; I can locate buttons with some difficulty without a visible cursor. I've tried messing with the mouse settings via the Devices and Printers tab on my Start screen, to no avail.

The games on which it doesn't work are Team Fortress 2, Portal, and League of Legends. It works fine in Dead Space, Dark Souls, and Minecraft.

It is not enabled… Why don't you try left, right, up, down buttons in the keyboard?