how can i activate my antivirus which i got preinstalled in my dell laptop
Please follow the below steps to register your mcafee preinstalled with dell;
Right click on the M icon on the system tray
Select product set up and continue with the prompts
From the option you get, select login and continue to complete the registration (if you already have a mcafee account in that email id)
Kindly report back with the exact error you receive so that we could proceed further.