I was recently blessed with an SP3 and it came with the purple keyboard. As a guy I preferred the Dark blue found at Best buy so I bought one. It worked fine for a couple days and then suddenly stopped functioning. The blue keyboard lights up and I can dim the keyboard but nothing else works on it. I can snap the purple one back on and it works just fine. I returned the blue one to best buy and they sent me a new one. It too does not work. When I first attached it, windows installed the device but it will not function. Looking for help with this colorful conundrum.