Thanks to all here and a particular 'doff of the hat' to Tarq. Despite hours of 'gargling' and trawling the AVG fora I had not found that remover. Worked a treat as did the security fix. Still cannot install AVG however as it 'cannot create a registry key'. Tom's Hardware directed me to look at the reg permissions and sure enough they had changed. Reset them and rebooted to find my machine moving at the pace of a boiled haggis with some odd 'changes' to some of the functions. So, sys restore and all well again (without AVG!)
Off now to look at 'Avast'
