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thanks guys, im trying different things at the moment, pc is going crazy, i cannot uninstall then reinstall avg free as it says i need to uninstall it manually, i still cannot see the programme to uninstall delta toolbar, its hidden under a different name somewhere in nprogrammes and features and im wary of uninstalling the wrong programme. i have tried to install malware bytes but it gives me an ang toolbar running yahoo search engine grrrrrrr..i want to keep my google chrome. plus malware bytes is asking for £29.99 fee. i do not mind this but my pc was running fine on avg free for years. i will pay it as a last resort , or if any one can advice me which one i should pay for ? again to you all thankyou very much for your help. much appreciated ;-)