If your using a card reader to transfer files its unlikely you have a virus . If you are connecting your camera to your laptop there is a chance of malware but it would have to be specific to the camera . It would probably come from some sort of editing program and it is unlikely it would target the hardware of the camera . I would be looking for another reason for the faulty screen . Was the camera dropped or exposed to moisture? You may need to replace the LCD screen . Hope this helps