Câu 153: 220-1002: CompTIA A+ Certification Exam: Core 2

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? (Choose two.)

1. A. Perform a system file check and replace any changed files with their original versions
2. B. Enable the pop-up blocker on the Internet browser — đáp án hiện tại
3. C. Uninstall any recently installed unknown programs and browser extensions — đáp án hiện tại
4. D. Perform a hard shutdown and cold boot the computer
5. E. Scan the RAM and hard drive using an up-to-date antivirus program