Frequent unexpected pop-up windows appearing on your computer are indicative of a malware attack on your computer. Both viruses and spyware can infect your hard drive and result in pop-up ads and other behavior that drastically slow your computer’s performance. If these programs are not removed quickly, they can continue to download more viruses and malware to your system, send viruses to others through your email, and possibly stop your computer from functioning. Fixing a virus-infected computer can be challenging depending on the virus that is causing the pop-ups. Writer Bio
