I purchased around 2011, and used it on and off. I used it last around a year ago. I plugged it in, but it's not working at all. Windows 7 says it installed correctly, but there is no response, and the 8 light ls stuck on. I tried different USB slots, and even plugged it into a PS2 converter; nothing. All my other keyboards are working fine. It didn't fall or get wet so I think it's a driver issue. Any tips are appreciated. Thanks.