When you remove Skype and then install the latest version, you're basically resetting the program and all of its connections with your camera and microphone, which should resolve any issues.
Mgbe ị na-ewepụ skype wee wụnye mbipute kachasị ọhụrụ, ị na-edozi ihe omume ahụ na njikọ ya niile na igwefoto na okwu okwu, nke kwesịrị idozi nsogbu ọ bụla.