I installed Malware on my desktop and it works just fine and saved me from a Trojan virus. I downloaded Malware onto my laptop tonight - Windows XP - and it shows the icon on the desktop. You click on the icon, the program opens and you choose full scan and hit scan. A very quick little screen pops up with discs C and D listed on it and then disappears. Then the whole program shuts down, disappears and absolutely NOTHING happens. You double click on the icon again, the program starts, you do the whole thing over again with the same results. I'm am NOT techo geek savvy. I need simple instructions in simple English if anyone knows why this might be happening. I have Webroot on both computers and it did not interfere with anything on my desktop. B) B) Frustrated