If you suppose malware is lurking on your computer, stop shopping, banking, and other online activities that involve user names, passwords, or other susceptible information. Malware might be sending your personal information to identity thieves.

Confirm that your security software is up-to-date, and then use it to scan your computer. Delete everything the program identifies as a difficulty. You may have to restart your computer for the changes to obtain effect.

If the problem persists after you exhaust your capability to diagnose and treat it, you might want to call for proficient help. If your computer is covered by a guarantee that offers free tech support, contact the manufacturer. Before you call, write down the model and sequential number of your computer, the name of any software you've installed, and a short explanation of the problem. Your notes will help you give a precise description to the technician.