I did a decent amount of research about this mouse before i decided to ask for it for Christmas, everything I read/heard was that it was an amazing mouse so I was really looking forward to getting it, the only problem is now that I have it it doesn't work. It lights up when I boot up my PC and that's it. Once the PC is actually on and running it ceases to work, no lights no nothing. I'm using Windows 7 64 bit, any help would be greatly appreciated. Also, I've already tried downloading logitechs software and what not.