Thank you for your reply and I suppose I will have to wait on the next update and try again.
What's annoying is that IE11 isn't fully compatible with all sites whereas Firefox tends to be. I've just had to install Firefox v30 again in order to print off some boarding passes as with IE11 the website just stuck. After printing I had to uninstall Firefox again otherwise I would lose my USB ports.
I would like to find a copy of Firefox v29 but all sites I've seen only offer the latest version.
I've read before that Mozilla release their latest updates with any support and then wait to see what happens and if the forums can resolve any issues - don't know if this is true or not but it is very strange that the update alone knocks hardware.
Thanks again.
Steve :E