One of the most common problems is a slow computer because of Trojans and pop-ups.
So what is a Trojan horse for computers? The name comes from the fact that these programs masquerade as programs that you would want. You download this, but actually get something else – pop-ups, spyware, malware, etc. Just like the Trojan horse at Troy.
How do you know? Pop-ups come up every time you go on the internet. Often, you cannot use the computer because they come up so often. Your screen fills with pop-ups.
Sometimes you are told you have Trojans. The program gives you a long list of trojans on your computer. You are directed to a site where you are told you should download their program to remove the Trojans for $69. I know of no legitimate program that automatically starts and asks for money. Don’t pay it.
Download malwarebytes Anti-malware if you can. Run it. If that clears up the problem, consider yourself lucky. If not, you probably need to call for help.