|Not sure what "IE not starting" tells us because that is a different symptom and maybe, as you don't use it, that issue might have been around for quite a while.|
I think the only way to prove for certain that your hang it is to do with Chrome is to install Firefox temporarily and see if that hangs too.
Can you say how long you have had the freeze up? If it is not for too long ago System Restore might fix it but it would be nice to be sure whether or not it is purley a Chrome browser issue.
Does the computer hang or freeze when you are not using the internet?
Overheating usually happens with time and/or when the CPU is being heavily used.
Always pop back and let us know the outcome - thanks