1-844-738-3990 pop up virus claims “your PC has been blocked” error #3658c27a325f4ec. Ostensibly, your computer system is infected with spyware. In order to fix it and defend your PC, the scam offers “help”. It offers to call 1-844-738-3990. Actually, it is a fake support. You should be aware, such pop up windows will appear when adware penetrated inside your system. This unwanted program creates alerts and pop up warning. If you want to get rid of 1-844-738-3990 virus, you need to use reliable ways. Below, we wrote instructions to remove it fully.