For some reason YouTube wont work on my pc anymore, it says that i either have Javascript turned off or dont have the latest version of flash player (which i know i do) So, the question is where/how do i turn on the Javascript?
Look at the settings under tools->internet options->security, ActiveX/Script/Java can be disabled/enabled here. If it's all enabled then you might need to uninstall the relevant plug-in and then let it reinstall itself.