Hello, I have a Toshsiba CC5-A5281 latop. It came as a Windows 8.1. But I upgraded to Windows 10 and I had the BSOD. Np though. It was a registry problem, got it fixed and that was that. After it was fixed, about 2 weeks later, the fn key was locked. Keep in mind, this happened to me before, I just don't know how to fix it. Any suggestions?