A home user reports slow computer performance and application crashes after clicking a "repair" button on a pop-up warning while browsing the Internet.
Which of the following are the FIRST steps a technician should take to identify and resolve the issue? (Select TWO).
A . Perform a system file check and replace any changed files with their original versions
B . Enable the pop-up blocker on the Internet browser
C . Uninstall any recently installed unknown programs and browser extensions,
D . Perform a hard shutdown and cold boot the computer
E . Scan the RAM and hard drive using an up-to-date antivirus program.
Answer: B, C