Weird Bug
what is the permission error? and have you googled (irony! (almost)) the permission error? have you tried a chrome alternative? opera or comodo dragon. they use chromium (the same as chrome does) but they do their own thing with it.
when you started chrome, and it doesnt do anything, open taskmanager, and stop the process for all instances of chrome.exe.
then try again to start it.
Does that work?
a man who doesnt make mistakes doesnt do anything