Do you feel that your computer is still not secure even after the installation of Avast antivirus? If so then may be Avast is not able to perform its duty well. This can happen when you are having two or more antivirus software installed in your system. When you use some other security suite along with Avast, both the software have conflict with each other. In such situation you need to remove the other software from your device from control panel. If you need assistance for the same then dial us at Avast Contact Helpline Number UK.