On and off for a good part of to day I've been trying to get Avast to install, but just as you think you've installed it, all of a subdden it gets into this cycle of the BSOD with this warning (see pic below) and then restarts back up on its own, then once everything has reloaded it soon goes back into the same cycle again. I tried to install AVG free anti-virus instead, but no joy with that either, as that wanted a licence key for the free version, plus it still went into the cycle I mentioned above as it did with Avast. I've run CCleaner to remove any thing left over after using the recommended removal tools from Avast and AVG. I have also tried before using those removal tools, Revo uninstaller, to uninstall the anti virus software, but still no luck.
I just about had enough of it now, so if any of you can shed any light on this I'd be a very happy person.

Chris.