Hello friends, I am new to this forum. I have HP Pavilion dv6-2150us, owning since Jan 2010. Recently I have started facing this weird problem. When I switch ON my laptop, for the first 10-15mins the CPU usage constantly remains between 80 and 100% and after 15mins, it comes to normal (0 - 50%). I am using licensed antivirus (Quick Heal total security) and have automatic updates enabled. I scan my laptop regularly and till now I have not faced any problem. All the processes in Task Bar are fine as after 10-15mins, when the CPU usage comes to normal (0 - 50%) even then the processes use same memory. I would be glad if anyone has solution for this as I do not want to format my pc. Thanks.