Are you starting Skype automatically when you start Windows, or do you start Skype manually after Windows is already running? If you're starting Skype with Windows, try changing to letting Windows start before starting Skype to see if that makes any difference.
When Skype doesn't detect your webcam, if you click on Tools > Options > Video settings, what does it say in the "Select webcam" box? If you click on the pull down arrow next to that box, are there choices that can be selected there?
If there is nothing that can be selected in Video settings, and since you weren't having this problem up until recently, you can try recetting your Skype configuration files with this procedure:
Quit Skype. Hold the Windows key and type r. In the box that comes up type %appdata% <enter>. Scroll down to find the \Skype folder and rename it something like \Skype_old. Restart Skype.
Note: Renaming the Skype folder will move IM and call history to the renamed folder. They can be recovered with a few extra steps.
Please note: I do not respond to requests for help via Private Message.
