everytime I open my internet explorer there is an error appear on the lower right corner of my monitor saying”System Messaged click here for details”. then when I click the message it automatically go to one site. what is the problem? is this a virus? thanks.
Unfortunately you probably are infected with something, follow our Removing a Trojan advice. If you have clicked for details and paid any money to these people then you should contact your credit card company. We’d also strongly recommend changing banking and other important passwords after your computer has been cleaned.