Hi guys. I have a really frustrating story and I really hope you guys could help me. Yesterday I bought a Alcor 4000 DPI, when I plugged into my PC, the LED keeps blinking, and the PC keeps making that noise when a new device is connected. I thought it was a problem with the Alcor, but when I tested in my brother's PC, it worked instantly. After 5 hours+ of researching and trying to make it work, I FORMATED my PC, and the error keeps on going. I really don't know what to do, my motherboard is a Asus M4A88T-V, I don't know if it is a incompatibility or something like that. ps: When I plug the Alcor, says that the driver was SUCESSFULLY installed, but still nothing.. Please help me!!!